Margaret Simon, M.D.
NPI 1538472105 · Family Medicine Physician · Monterey, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Simon, M.D. is a Family Medicine Physician provider in Monterey, CA (NPI 1538472105).
Provider details
- NPI number
- 1538472105
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A108293 (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
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Hydrochlorothiazide | 14 |
| Gabapentin | 13 |
| Lisinopril | 12 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 11 |
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
Additional practice locations (1)
- 903 N Main StSalinas, CA 93906-3912Phone: (650) 575-8961
Registry dates
- Enumerated
- 2010-07-23
- Last updated
- 2023-03-07
- Certified
- 2020-07-02
Frequently asked questions
- What is Margaret Simon's NPI number?
- Margaret Simon's National Provider Identifier (NPI) is 1538472105, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Simon's specialty?
- Margaret Simon is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Simon located?
- Margaret Simon's practice location on file with NPPES is 2 Lower Ragsdale Dr Ste 260, Monterey, CA 93940-5748.
- What is Margaret Simon's phone number?
- The practice phone number listed in the NPPES registry for Margaret Simon is (650) 575-8961.
- Does Margaret Simon accept Medicare?
- Margaret Simon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Simon's NPI active?
- Yes — Margaret Simon's NPI (1538472105) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.