Mark Sockell, MD
NPI 1194810952 · Geriatric Medicine (Internal Medicine) Physician · Point Reyers, CA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sockell, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Point Reyers, CA (NPI 1194810952).
Provider details
- NPI number
- 1194810952
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G53283 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 127 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 339 | 47 |
| Apixabanbrand: Eliquis | 324 | 24 |
| Amlodipine Besylate | 244 | 34 |
| Trazodone Hcl | 214 | 30 |
| Gabapentin | 192 | 25 |
| Lisinopril | 190 | 27 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-04
- Last updated
- 2022-09-08
- Certified
- 2022-09-08
Frequently asked questions
- What is Mark Sockell's NPI number?
- Mark Sockell's National Provider Identifier (NPI) is 1194810952, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sockell's specialty?
- Mark Sockell is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Sockell located?
- Mark Sockell's practice location on file with NPPES is West Marin Medical Center, Point Reyers, CA 94956.
- What is Mark Sockell's phone number?
- The practice phone number listed in the NPPES registry for Mark Sockell is (415) 663-1082.
- Does Mark Sockell accept Medicare?
- Mark Sockell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Sockell's NPI active?
- Yes — Mark Sockell's NPI (1194810952) is active in the NPPES registry as of the last update on 2022-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.