Marian Fam, MD
NPI 1891291423 · Family Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marian Fam, MD is a Family Medicine Physician provider in Boston, MA (NPI 1891291423).
Provider details
- NPI number
- 1891291423
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A174623 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-03
- Last updated
- 2024-05-18
- Certified
- 2024-05-18
Frequently asked questions
- What is Marian Fam's NPI number?
- Marian Fam's National Provider Identifier (NPI) is 1891291423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marian Fam's specialty?
- Marian Fam is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marian Fam located?
- Marian Fam's practice location on file with NPPES is 75 State St Fl 26, Boston, MA 02109-1827.
- What is Marian Fam's phone number?
- The practice phone number listed in the NPPES registry for Marian Fam is (617) 204-3500.
- Does Marian Fam accept Medicare?
- Marian Fam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marian Fam's NPI active?
- Yes — Marian Fam's NPI (1891291423) is active in the NPPES registry as of the last update on 2024-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.