Margaret Grossman, M.D.
NPI 1942352075 · Family Medicine Physician · Arcata, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Grossman, M.D. is a Family Medicine Physician provider in Arcata, CA (NPI 1942352075).
Provider details
- NPI number
- 1942352075
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G55960 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,380 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 443 | $128 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 264 | $91 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 209 | $132 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 121 | $57 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 113 | $24 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 55 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 254 | 70 |
| Rosuvastatin Calcium | 147 | 43 |
| Levothyroxine Sodium | 136 | 33 |
| Amlodipine Besylate | 128 | 30 |
| Gabapentin | 122 | 33 |
| Alendronate Sodium | 92 | 27 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-17
- Last updated
- 2025-02-12
- Certified
- 2025-02-12
Frequently asked questions
- What is Margaret Grossman's NPI number?
- Margaret Grossman's National Provider Identifier (NPI) is 1942352075, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Grossman's specialty?
- Margaret Grossman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Grossman located?
- Margaret Grossman's practice location on file with NPPES is 4677 Valley East Blvd Ste 1, Arcata, CA 95521-4630.
- What is Margaret Grossman's phone number?
- The practice phone number listed in the NPPES registry for Margaret Grossman is (707) 822-1122.
- Does Margaret Grossman accept Medicare?
- Margaret Grossman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Grossman's NPI active?
- Yes — Margaret Grossman's NPI (1942352075) is active in the NPPES registry as of the last update on 2025-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.