DR. STEPHEN MARK MASSA M. D.
NPI 1710938584
Psychiatry & Neurology - Neurology in San Francisco, CA

Q: What is Stephen Massa's NPI number?

The NPI number for Stephen Massa is 1710938584. It was assigned to this individual provider in the NPPES registry on May 15, 2006.

Q: What is Stephen Massa's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Massa was last updated on July 12, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.

Active since May 15, 2006PECOS Enrolled

4150 CLEMENT ST, NEUROLOGY (127), SAN FRANCISCO, CA 94121(415) 221-4810(415) 750-2273 Get Directions Write a Review

NPPES record last updated: July 12, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Stephen Mark Massa M. D. NPPES

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

DR. STEPHEN MARK MASSA M. D. (NPI 1710938584) is an individual neurology provider in San Francisco, California, licensed in California (G57165) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1710938584

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameDR. STEPHEN MARK MASSACredential: M. D.

Location Address4150 CLEMENT ST, NEUROLOGY (127)San Francisco, CA 94121-1545

Mailing Address4150 Clement St, Neurology (127)San Francisco, CA 94121-1545 · (415) 221-4810 · Fax (415) 750-2273

Phone(415) 221-4810

Fax(415) 750-2273

Sole ProprietorNo

Enumeration DateMay 15, 2006

Last NPPES UpdateJuly 12, 2007

✔ NPI 1710938584 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in CA · G57165

Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

4150 CLEMENT ST, San Francisco, CA 94121

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Stephen Mark Massa M. D. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94121 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MR. SHANNON KISSINGER MSW

Social Worker