Mary Clegg, MD
NPI 1215293063 · Family Medicine Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Clegg, MD is a Family Medicine Physician provider in Sacramento, CA (NPI 1215293063).
Provider details
- NPI number
- 1215293063
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A126979 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 99 | 56 |
| Clobetasol Propionate | 31 | 19 |
| Hydrocortisone | 16 | — |
| Progesterone, Micronizedbrand: Progesterone | 13 | — |
| Estradiolbrand: Estring | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-04-05
- Last updated
- 2021-12-15
Frequently asked questions
- What is Mary Clegg's NPI number?
- Mary Clegg's National Provider Identifier (NPI) is 1215293063, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Clegg's specialty?
- Mary Clegg is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Clegg located?
- Mary Clegg's practice location on file with NPPES is 4860 Y St Ste 1600, Sacramento, CA 95817-2307.
- What is Mary Clegg's phone number?
- The practice phone number listed in the NPPES registry for Mary Clegg is (916) 734-3630.
- Does Mary Clegg accept Medicare?
- Mary Clegg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Clegg's NPI active?
- Yes — Mary Clegg's NPI (1215293063) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.