Karyn Grossman, M.D.
Karyn Grossman, M.D. is a Procedural Dermatology Physician in Santa Monica, CA, registered under NPI 1134259104. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 2001 SANTA MONICA BLVD STE 1250W, Santa Monica, CA 90404. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| G084212 | CA | Dermatology Physician |
| 199318 | NY | Procedural Dermatology Physician |
| G084212 | CA | Procedural Dermatology Physician primary |
Licences are recorded in 2 states: CA, NY. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Order And Referring Only - Dermatology
- PAC ID
- 8628343878
- Enrollment ID
- I20171013002198
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Dermatology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: California and New York. The practice address on file is in Santa Monica, CA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- G084212
- Specialty
- Dermatology Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Procedural Dermatology covers
Procedural Dermatology, a subspecialty of Dermatology, encompassing a wide variety of surgical procedures and methods to remove or modify skin tissue for health or cosmetic benefit. These methods include scalpel surgery, laser surgery, chemical surgery, cryosurgery (liquid nitrogen), electrosurgery, aspiration surgery, liposuction, injection of filler substances, and Mohs micrographic controlled surgery (a special technique for the removal of growths, especially skin cancers). NUCC Health Care Provider Taxonomy, code 207NS0135X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207N00000X | Dermatology Physician | G084212 | CA | |
| 207NS0135X | Procedural Dermatology Physician Procedural Dermatology | 199318 | NY | |
| 207NS0135X | Procedural Dermatology Physician Procedural Dermatology | G084212 | CA | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1134259104 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 7, 2007 |
| Last updated | Jul 21, 2022 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | M.D. |
| Practice address |
2001 SANTA MONICA BLVD STE 1250W Santa Monica, CA 90404 (310) 998-0040 |
| Mailing address |
2001 SANTA MONICA BLVD. SUITE 1250W Santa Monica, CA 90404 |
| Other identifiers |
199318
· Other (NY) 74551 · Other (MA) G84212 · Other (CA) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 1 | 3 | 4 | 2 | 5 | 9 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 6 | 4 | 4 | 5 | 9 | 1 | 0 |
Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.