ABA Therapy Through Health Plan of San Joaquin and Mountain Valley Health Plan: A Guide for Central Valley and El Dorado County Families

Health Plan of San Joaquin is not an insurance company you shop for. It is a not-for-profit public health plan governed by the San Joaquin County Health Commission, created to run Medi-Cal locally. It has served Medi-Cal members in San Joaquin and Stanislaus counties for years, which is why so many families in Stockton, Lodi, Tracy, Manteca, Modesto, Turlock, and Ceres have the same plan name on the card.

On January 1, 2024, the same organization expanded into El Dorado and Alpine counties, where it operates under the name Mountain Valley Health Plan. If you live in El Dorado Hills, Cameron Park, Shingle Springs, or Placerville and your child's Medi-Cal card says Mountain Valley Health Plan, you are dealing with the same plan, the same policies, and the same phone numbers as an HPSJ family in Stockton. One practical difference: Mountain Valley Health Plan is not a Sacramento County plan. Families across the county line in Folsom or Rancho Cordova have a different Medi-Cal plan.

For the rest of this guide, “the plan” means HPSJ and MVHP together. When something differs by county, we say so.

Yes. Health Plan of San Joaquin and Mountain Valley Health Plan cover ABA therapy for Medi-Cal members under 21. ABA is delivered under the Medi-Cal benefit called Behavioral Health Treatment, which every Medi-Cal managed care plan in California must cover under the federal EPSDT rule: Medicaid must pay for any medically necessary service for a child. The statewide rules live in a DHCS policy called All Plan Letter 23-010, and HPSJ's current provider guidance says the plan manages behavioral health coverage itself.

HPSJ's member materials describe the benefit this way:

• BHT is for members under 21 with a diagnosis of autism spectrum disorder.
• It also covers individuals without a diagnosis of autism where BHT is medically indicated.
• Services require an order from a licensed psychologist or physician and prior authorization from the plan.

What is actually covered

Authorizing BHT approves a package your provider delivers and documents: a functional behavior assessment by a Board Certified Behavior Analyst (BCBA), a written treatment plan with measurable goals, one-on-one sessions with a behavior technician, BCBA supervision, parent training, and progress data. Under Medi-Cal policy these services are meant to be delivered in the home and other natural settings, which is the model Behavia runs.

Two statewide rules matter to parents. Hours are set by medical necessity, not by a plan-wide cap, so the number comes from your child's assessment rather than a lookup table. And services can only be reduced or ended on a finding that they are no longer medically necessary, not because an authorization period ran out. Our statewide guide on whether Medi-Cal covers ABA therapy goes deeper on how hours are decided.

HPSJ's provider guidance is unusually plain about the two things it needs. To request BHT or ABA for a member, the plan requires an order from a licensed psychologist or physician, and prior authorization is required before services begin. You do not need a developmental pediatrician, a completed autism evaluation, or a regional center case to open that door.

• Your pediatrician or family doctor. The most common route. Ask for an order for Behavioral Health Treatment and use the words “medically necessary”; that is the standard the plan applies.
• A licensed psychologist. If your child has already been evaluated, the evaluating psychologist can write the order.
• The plan itself. HPSJ's Behavioral Health customer service line can tell you what documents it needs and which ABA providers are contracted near you.

From there the paperwork is the provider's job. HPSJ publishes a dedicated referral address for BHT and ABA, BHTReferral@hpsj.com, where a contracted provider or physician's office sends the order and supporting records. Your ABA provider then submits the prior authorization request with the BCBA's functional behavior assessment, the treatment plan, and the recommended hours. You sign a Release of Information so the provider, the plan, and the regional center can share records; you can revoke it at any time.

If you are also pursuing a formal diagnosis, our guide on getting an autism evaluation in California walks through the routes. It runs alongside the BHT request, not ahead of it.

Many Central Valley and foothill families hear about ABA from a regional center service coordinator first, so the roles are worth separating clearly. In the HPSJ and MVHP footprint:

• Valley Mountain Regional Center (VMRC) serves San Joaquin and Stanislaus counties, along with Amador, Calaveras, and Tuolumne.
• Alta California Regional Center (ACRC) serves El Dorado and Alpine counties, along with Sacramento, Placer, Nevada, Sierra, Yolo, Sutter, Yuba, and Colusa.

For children under three, the regional center runs Early Start, California's early intervention program, and you can refer your own child without a doctor's referral. Early Start runs alongside, not instead of, a BHT request to the health plan.

For funding, the order is set by state policy. Medi-Cal managed care plans are responsible for medically necessary BHT for members under 21, and regional centers are payers of last resort. If VMRC or ACRC provides some behavioral support that does not meet your child's full medical need, the health plan is still responsible for the remainder, and the two are expected to coordinate rather than duplicate.

Here is the whole path in order. Some steps overlap, and your provider carries most of the weight after step three.

1. 1

   Confirm coverage and read the plan name

   Make sure your child's Medi-Cal is active and read the plan name on the member ID card. Health Plan of San Joaquin and Mountain Valley Health Plan are the same plan; either name means this guide applies to you. A different plan name means a different authorization process.

2. 2

   Ask your pediatrician for an order for Behavioral Health Treatment

   A licensed physician or psychologist writes the order stating that BHT is medically necessary. No autism diagnosis is required. Ask for a copy for your own records.

3. 3

   Choose a provider contracted with the plan

   Your ABA provider must be in-network with HPSJ or MVHP and actually staffed in your city. Behavia is in-network with both plans and serves San Joaquin County, Stanislaus County, and western El Dorado County in-home. You can start online and our intake team will follow up by email, text, or phone.

4. 4

   The BCBA assessment

   A BCBA meets your child, usually at home, and builds a functional behavior assessment plus a treatment plan with measurable goals, recommended hours, and parent-training targets.

5. 5

   Prior authorization

   Your provider submits the prior authorization request to the plan with the physician or psychologist order and the assessment. The plan reviews it against medical necessity criteria and may come back with follow-up questions, which your provider answers.

6. 6

   Scheduling and the first sessions

   Once services are authorized, we match your family with a behavior technician whose availability overlaps yours. Share your real weekly availability rather than your ideal one. Our guide to the first month of in-home ABA covers what happens next.

The benefit is identical across the plan's four counties, but the practical texture is not. Which regional center holds the caseload and which office serves your county both change the conversation.

• Stockton, Lodi, Tracy, and Manteca (San Joaquin County). This is HPSJ's home county; the plan's main office is in French Camp, just south of Stockton. Valley Mountain Regional Center holds the caseload. Families in Tracy and Manteca often commute toward the Bay Area for work, which makes in-home sessions in the late afternoon and early evening the realistic schedule; tell us that up front.
• Modesto, Turlock, Ceres, and Riverbank (Stanislaus County). HPSJ's Stanislaus office is on J Street in downtown Modesto. VMRC serves this county too. Stanislaus families have historically driven a long way for clinic-based ABA, which is exactly the problem in-home ABA removes.
• El Dorado Hills, Cameron Park, Shingle Springs, and Placerville (western El Dorado County). Your card says Mountain Valley Health Plan, and the plan's local office is in Placerville. Alta California Regional Center holds the caseload. Behavia serves these communities from our Sacramento-area team. If your child's pediatrician is in Folsom or Sacramento, that is fine; the order can come from any licensed physician or psychologist, and the plan on the card decides who authorizes.
• Alpine County and eastern El Dorado County, including South Lake Tahoe. The Mountain Valley Health Plan benefit is the same, but staffing on the east side of the Sierra is a different question from staffing in the foothills. Contact us about availability before you commit, and we will tell you plainly what we can staff.

One thing holds everywhere: a health plan cannot deny or reduce BHT on the grounds that your child's school district provides services under an IEP. School supports and medically necessary ABA run alongside each other, and if school services fall short of medical necessity the plan is still responsible.

For the plan-specific details we keep current, see our Health Plan of San Joaquin ABA page and Mountain Valley Health Plan ABA page. For the full statewide picture, including how Medi-Cal works with other accepted plans, start at Medi-Cal ABA therapy.

Denials happen, and they are usually about documentation rather than a judgment on your child. The deadlines are real, so act on the notice rather than filing it away.

1. Read the Notice of Action. The plan must tell you in writing what was denied or changed and why. The date on that notice starts the clock.
2. Appeal to the plan within 60 days. Appeal by phone or in writing using the customer service number on the card, and ask your provider for updated progress data and a letter of medical necessity. If services were already approved, ask for them to continue during the appeal; the notice explains the deadline for that request.
3. Request a State Hearing up to 120 days after the appeal decision. After the plan decides, you can ask the California Department of Social Services for a State Hearing.
4. Or ask for an Independent Medical Review. For medical necessity disputes you can request an IMR from the Department of Managed Health Care after the plan appeal. The State Hearing clock keeps running while you do, so watch both dates.

Disability Rights California publishes free, plain-language guides to Medi-Cal appeals, and the Medi-Cal Managed Care Ombudsman can step in when a plan is not following its own rules. Your ABA provider should be carrying most of this paperwork; you should never be doing it alone. If you are still comparing providers, our guide to ABA providers in California lists the questions worth asking on the first call.

• Health Plan of San Joaquin: About Us and Mountain Valley Health Plan expansion effective 1/1/2024 — the plan's counties and the El Dorado and Alpine expansion
• HPSJ: Behavioral Health Services (providers) and HPSJ: Behavioral Health Treatment (members) — the order, prior authorization, referral email, and eligibility language quoted above
• HPSJ and Mountain Valley Health Plan: Contact Us — customer service lines and office addresses
• DHCS: Behavioral Health Treatment and All Plan Letter 23-010, the statewide policy every Medi-Cal plan follows for BHT
• Valley Mountain Regional Center (San Joaquin, Stanislaus) and Alta California Regional Center service area (El Dorado, Alpine)

Policies and phone numbers change; confirm any specific number or requirement here against your child's current card and the plan's own materials. For the same benefit in the North Bay, see ABA Therapy Through Partnership HealthPlan of California.