Updated September 1, 2026

// Payer directory

Verify Health Plan of San Mateo eligibility in real time.

Health Plan of San Mateo supports electronic real-time eligibility. Send the check to payer ID HPSM1 and the full benefits picture comes back in seconds, before the patient sits down.

Payer ID HPSM1Real-time eligibility: YesCAdental / medicalMedicare / Medicaid

Also billed as: Care Advantage · HPSM

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Seconds

The same Health Plan of San Mateo check that takes 15 to 25 minutes on the phone. Ten patients tomorrow: ten checks, or three hours on hold.

3 billing names

Health Plan of San Mateo shows up on cards under 3 names. Every one routes to payer ID HPSM1, and so do 7 older payer IDs still printed on cards. No guessing which card this is.

29 Health plans

verify in real time through Valian. One setup covers the whole Health family, Health Plan of San Mateo included.

From $39/mo

Per location, billed yearly. Found checks are billed once a month, $2.50 each and less as you run more. No seat fees, no processing fees.

The phone way

Call, hold, transcribe, repeat.

Verifying Health Plan of San Mateo by phone means a menu, a hold queue, and 15 to 25 minutes per patient while someone at the desk reads benefits back by hand. Ten patients on tomorrow's schedule is half a workday on hold.

The real-time way

Payer ID HPSM1, in seconds.

The same check, sent electronically. Sign in and run it for any patient in one click, and Valian flags the ones that need a human look.

	By phone	In Valian
Time per patient	15 to 25 minutes on hold	Seconds
When it happens	Day of, squeezed between patients	Any time before the visit, in one click
What you get	Notes scribbled while someone reads benefits aloud	The full breakdown, saved to the patient

What a Health Plan of San Mateo eligibility check returns

Whether coverage is active, with plan and group details
Deductible, and how much of it is already met this year
Annual maximum, and how much of it is left to work with
Coverage percentages by category: preventive, basic, major
Frequency limits on cleanings, exams, and X-rays
Waiting periods, where Health Plan of San Mateo reports them electronically

Eligibility result

Sample data

Status: Active
Plan: PPO · Group 8823
Deductible: $50 · $0 met
Annual max: $1,500 remaining
Preventive: 100%
Basic: 80%
Major: 50%
Cleanings: 2 / year

Returned in seconds · payer ID HPSM1

How practices handle this today, in their own words

Verbatim from recorded calls to dental offices. Names withheld.

We call the insurance, or I go on their website and do it. Yeah, we manually do it.

Office manager, general dentistry

We have a third party insurance verification team that does it for us. I’m not too sure, maybe like seven, ten minutes.

Front office lead, general dentistry

Our system does it, and the ones that are not set up for electronic, we do ourselves.

Practice manager, multi-provider group

How getting set up works

Step 1

Book a discovery call

A 15-minute call with our team: we show you a check and size your plan. Then you sign up from the link we send you: create the account, sign the agreement, and put a card on file.

Step 2

Save your carriers and codes

Pick the insurance carriers you take and the codes you check.

Step 3

Run a check in one click

Sign in, pick a patient and see their coverage in seconds before the visit, Health Plan of San Mateo included. No hold music, no portal logins.

Under half an hour of your time all in. See how the software compares, how a real-time check works, or what outsourcing costs.

What Health Plan San Mateo supports through our network

Real-time eligibility (270/271): Yes, in seconds
Enrollment for eligibility: None, checks work day one
Dental claims (837D): Not through our network
Claim status (276/277): Not through our network
Electronic remittance (835): Yes, after a multi-step enrollment, typically a few weeks
Electronic funds transfer: Not through our network
Claim attachments: Not through our network

Names and IDs this payer goes by

Health Plan of San Mateo · Care Advantage · HPSM. Older cards may show payer ID 10362, 12X74, 4292, 5678 and HPOSM. All of them route to payer ID HPSM1.

Payer site: www.hpsm.org

How to verify Health Plan of San Mateo, step by step

Get the member ID and date of birth from the card or the patient.

Send the electronic eligibility request (a 270) to payer ID HPSM1.

Read the response (the 271): status, deductible, max, percentages, frequencies.

Save the breakdown to the patient. With Valian, all four take one click and a few seconds.

Health Plan of San Mateo runs Medicare and Medicaid plans across California. Medicaid dental benefits change by state and by age, which is exactly what the check reads off the plan. Medicare dental benefits live in the specific Advantage plan, not in Medicare itself, so the plan on the card decides.

Health Plan of San Mateo, for your front desk

Phone numbers and claims address, from Health Plan of San Mateo's own provider pages.

Provider customer service: 650-616-2106
Provider email: PSInquiries@hpsm.org
Claims mailing address: HPSM Dental, PO Box 1798, San Leandro, California 94577

Source: Health Plan of San Mateo, submit claims page and claims page. Checked September 19, 2026.

Health Plan of San Mateo, quick answers

Does Health Plan of San Mateo support real-time eligibility?

Yes. Eligibility checks to Health Plan of San Mateo clear electronically in seconds through payer ID HPSM1.

What payer ID do I use for Health Plan of San Mateo?

HPSM1 for eligibility transactions. The same payer also appears on cards as Care Advantage, HPSM.

What does a check cost with Valian?

Plans from $39 a month per location, billed yearly, or from $49 month to month. Plus $2.50 or less per check we find — $0 when we can’t find the insurance. No setup fee and no seat fees. Sign in and run each check in one click before the visit.

Does Health Plan of San Mateo require enrollment before I can check eligibility?

No. Eligibility checks work from day one, with no payer enrollment paperwork.

Which Health Plan of San Mateo plans does this cover?

Health Plan of San Mateo runs Medicare and Medicaid plans in California. The eligibility check reads the specific plan on the patient's card, whichever program it belongs to.

Can I get Health Plan of San Mateo remittances electronically?

Yes. Health Plan of San Mateo sends electronic remittance advice (835) after a multi-step enrollment, typically a few weeks.

What if the patient's card shows a different Health name?

Alternate billing names route to the same payer ID, HPSM1. The same check covers them.

More questions about verifying Health Plan of San Mateo? Schedule 15 minutes with us and bring your toughest plan.

Check any Health Plan of San Mateo patient in one click, before they walk in.

Plans from $39 a month per location, billed yearly, or from $49 month to month. Plus $2.50 or less per check we find — $0 when we can’t find the insurance. No setup fee and no seat fees.

Book 15 minutes, demo or onboarding

Pick a time, then tell us on the form whether it is a demo or an onboarding call.

View all 760 payers

Other California dental payers

41 other payers operating in California also verify in real time, 15 of them with Medicaid plans.

Medicaid plans in California: Aetna Better Health California, AltaMed, Blue Shield of California, Blue Shield of California Promise Health Plan, Blue Shield of California Promise Health Plan, Commonwealth Care Alliance (CCA), and 9 more.

All 42 California payers, with plan types and enrollment

The Health family in the network

29 Health plans verify in real time through Valian.

More payers operating in California

Payer names and marks belong to their owners and identify the insurance company a practice can verify. Sample result shown for illustration; real results reflect the patient's actual plan. Payer capabilities can change between network updates.