Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Karyn L Grossman, M.D.

Procedural Dermatology Physician in Santa Monica, CA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1134259104

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Registry record

Entity type Individual (Type 1)

Name Karyn L Grossman

Credential M.D.

Sex Female

Practice address Santa Monica, CA, 90404

Phone (310) 998-0040

Enumeration date Mar 7, 2007

Last updated in NPPES Jul 21, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License G084212 (CA) Secondary

207NS0135X Procedural Dermatology Physician Allopathic & Osteopathic Physicians · License 199318 (NY) Secondary

207NS0135X Procedural Dermatology Physician Allopathic & Osteopathic Physicians · License G084212 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
199318	Other	NY	STATE MEDICAL LICENSE
G84212	Other	CA	STATE MEDICAL LICENSE
74551	Other	MA	STATE MEDICAL LICENSE

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What specialty is Karyn Grossman?

Karyn Grossman is registered in NPPES with the primary taxonomy of Procedural Dermatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Ana Dugar Dermatology Physician · Santa Monica, CA NPI 1548792328 Justine Le Physician Assistant · Santa Monica, CA NPI 1093277477

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.