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COREY S MAAS M.D.
NPI 1851469282
Surgery - Plastic and Reconstructive Surgery in San Francisco, CA

Active since December 02, 2006PECOS Enrolled
2400 CLAY ST, SAN FRANCISCO, CA 94115(415) 567-7000(415) 567-7011 Get Directions Write a Review

NPPES record last updated: March 24, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Corey S Maas M.d. NPPES

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

COREY S MAAS M.D. (NPI 1851469282) is an individual plastic and reconstructive surgery provider in San Francisco, California, licensed in California (G71163) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1851469282
Entity TypeIndividualMale
Primary Taxonomy2086S0122X
Provider Legal NameCOREY S MAASCredential: M.D.
Location Address2400 CLAY STSan Francisco, CA 94115-1809
Mailing Address2400 Clay StSan Francisco, CA 94115-1809 · (415) 567-7000 · Fax (415) 567-7011
Phone(415) 567-7000
Fax(415) 567-7011
Sole ProprietorYes
Enumeration DateDecember 2, 2006
Last NPPES UpdateMarch 24, 2026
NPPES CertifiedMarch 24, 2026
✔ NPI 1851469282 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Plastic and Reconstructive SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0122X
License✔ Licensed in CA · G71163
Definition
A surgeon who specializes in plastic and reconstructive surgery.
2400 CLAY ST, San Francisco, CA 94115
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Corey S Maas 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.

Other Providers at the Same Location NPPES 4

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

DR. RANI KARINA SPUDICH M.D.
General Practice
2400 CLAY ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 567-7000
JASON PAUL CHAMPAGNE M.D.
Otolaryngology (Otolaryngology/Facial Plastic Surgery)
2400 CLAY ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 567-7000
COREY S. MAAS M.D. A PROFESSIONAL CORPORATION
Surgery (Plastic and Reconstructive Surgery)
2400 CLAY ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 567-7000
DR. JASON LEE AZZI MD
Otolaryngology (Facial Plastic Surgery)
2400 CLAY ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 567-7000

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 Corey Maas's NPI number?

The NPI number for Corey Maas is 1851469282. It was assigned to this individual provider in the NPPES registry on December 2, 2006.

Where is Corey Maas located?

Corey Maas practices at 2400 Clay St, San Francisco, CA 94115. The listed phone number is (415) 567-7000.

What is Corey Maas's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Plastic and Reconstructive Surgery, with taxonomy code 2086S0122X.

Is Corey Maas enrolled in Medicare?

Yes. Corey Maas is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Corey Maas was last updated on March 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.