Greenfield Associates, M.D., P.A.
NPI 1396770996 · Internal Medicine Physician · Annapolis, MD
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Greenfield Associates, M.D., P.A. is a Internal Medicine Physician organization in Annapolis, MD (NPI 1396770996).
Provider details
- NPI number
- 1396770996
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Katrina Williams, Office Manager(410) 224-4926
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
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.
Practice location
Mailing address
Other names (DBA / former)
- Former legal business name
- Greenfield M.D., and Associates, P.A.
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2024-08-21
- Certified
- 2024-08-21
Frequently asked questions
- What is Greenfield Associates, M.D., P.A.'s NPI number?
- Greenfield Associates, M.D., P.A.'s National Provider Identifier (NPI) is 1396770996, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Greenfield Associates, M.D., P.A.?
- Greenfield Associates, M.D., P.A. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Greenfield Associates, M.D., P.A. located?
- Greenfield Associates, M.D., P.A.'s practice location on file with NPPES is 139 Old Solomons Island Rd, Annapolis, MD 21401-0904.
- What is Greenfield Associates, M.D., P.A.'s phone number?
- The practice phone number listed in the NPPES registry for Greenfield Associates, M.D., P.A. is (410) 224-2222.
- Does Greenfield Associates, M.D., P.A. accept Medicare?
- Greenfield Associates, M.D., P.A. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Greenfield Associates, M.D., P.A.?
- The authorized official listed on Greenfield Associates, M.D., P.A.'s NPPES record is Katrina Williams, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Greenfield Associates, M.D., P.A.'s NPI active?
- Yes — Greenfield Associates, M.D., P.A.'s NPI (1396770996) is active in the NPPES registry as of the last update on 2024-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.