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DEMETRA SERENA STAMM M.D.
NPI 1396906269
General Practice in San Mateo, CA

Active since June 23, 2008PECOS EnrolledAccepts Medicare Assignment
222 W 39TH AVE, SAN MATEO, CA 94403(916) 955-2809 Get Directions Write a Review

NPPES record last updated: January 4, 2017. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Demetra Serena Stamm M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DEMETRA SERENA STAMM M.D. (NPI 1396906269) is an individual general practice provider in San Mateo, California, licensed in California (A110149) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS and is a graduate of University Of North Carolina At Chapel Hill School Of Medicine (2008).

NPPES Registry Identity

NPI1396906269
Entity TypeIndividualFemale
Primary Taxonomy208D00000X
Provider Legal NameDEMETRA SERENA STAMMCredential: M.D.
Location Address222 W 39TH AVESan Mateo, CA 94403-4364
Mailing Address222 West 39th Avenue, San Mateo County Behavioral Health And Recovery ServiceSan Mateo, CA 94403 · (916) 955-2809
Phone(916) 955-2809
Sole ProprietorNo
Medical School CMSUniversity Of North Carolina At Chapel Hill School Of MedicineGraduated 2008
Enumeration DateJune 23, 2008
Last NPPES UpdateJanuary 4, 2017
✔ NPI 1396906269 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in CA · A110149
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
222 W 39TH AVE, San Mateo, CA 94403
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Demetra Serena Stamm M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5496036469
PECOS Enrollment IDI20170105001626
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Demetra Stamm reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of San Mateo
Same address
Multi-Specialty
222 W 39TH AVE
San Mateo, CA 94403
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1114005105 (California)
  • 430 clinicians in this Medicare group
NPI 1831268580 (650) 573-3702

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LORENA MICHEL PSY.D.
Psychologist (Clinical)
222 W 39TH AVE
SAN MATEO, CA 94403
San Mateo County (650) 573-3420
COUNTY OF SAN MATEO
General Acute Care Hospital
222 W 39TH AVE
SAN MATEO, CA 94403
San Mateo County (650) 573-2222
DR. JUDITH CLAIRE SCHIFFNER M.D.
Dermatology
222 W 39TH AVE
SAN MATEO, CA 94403
San Mateo County (650) 573-2414
SAN MATEO MEDICAL CENTER
Clinic/Center
222 W 39TH AVE
SAN MATEO, CA 94403
San Mateo County (650) 573-2222
JOHN ANDERSON MD
Obstetrics & Gynecology
222 W 39TH AVE
SAN MATEO, CA 94403
San Mateo County (650) 573-2222
MR. PAUL SAITO M.A.
Counselor
222 W 39TH AVE
SAN MATEO, CA 94403
San Mateo County (650) 573-3435
CHRISTIAN SUSTRINA PTA
Physical Medicine & Rehabilitation
222 W 39TH AVE
SAN MATEO, CA 94403
San Mateo County (650) 573-2222
KATHRYN JOY SANTANA RN PHN
Registered Nurse
222 W 39TH AVE
SAN MATEO, CA 94403
San Mateo County (650) 573-3982

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Demetra Stamm's NPI number?

The NPI number for Demetra Stamm is 1396906269. It was assigned to this individual provider in the NPPES registry on June 23, 2008.

Where is Demetra Stamm located?

Demetra Stamm practices at 222 W 39th Ave, San Mateo, CA 94403. The listed phone number is (916) 955-2809.

What is Demetra Stamm's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Demetra Stamm enrolled in Medicare?

Yes. Demetra Stamm is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Demetra Stamm's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Demetra Stamm reassigns Medicare benefits to County Of San Mateo (San Mateo, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Demetra Stamm's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Demetra Stamm was last updated on January 4, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.