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GREENFIELD ASSOCIATES, M.D., P.A.
NPI 1396770996
Internal Medicine in Annapolis, MD

Active since July 11, 2006CLIA 21D0219878 · Waiver
139 OLD SOLOMONS ISLAND RD, ANNAPOLIS, MD 21401(410) 224-2222(410) 224-4926 Get Directions Write a Review

NPPES record last updated: August 21, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Aug 21, 2024, Jul 25, 2024, Aug 10, 2021 (3 updates tracked since 2021).

About Greenfield Associates, M.d., P.a. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREENFIELD ASSOCIATES, M.D., P.A. (NPI 1396770996), doing business as Greenfield M.d., And Associates, P.a., is a healthcare organization registered as an internal medicine in Annapolis, Maryland and active in the NPI registry since July 2006. The organization holds a CLIA Waiver certificate valid through April 19, 2028 and lists Katrina Williams, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1396770996
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameGREENFIELD ASSOCIATES, M.D., P.A.
Location Address139 OLD SOLOMONS ISLAND RDAnnapolis, MD 21401-0904
Mailing Address139 Old Solomons Island RdAnnapolis, MD 21401-0904 · (410) 224-2222 · Fax (410) 224-4926
Phone(410) 224-2222
Fax(410) 224-4926
Organization SubpartNo
Authorized OfficialKatrina WilliamsOffice Manager · (410) 224-4926
Enumeration DateJuly 11, 2006
Last NPPES UpdateAugust 21, 20243 updates tracked since enumeration
NPPES CertifiedAugust 21, 2024
✔ NPI 1396770996 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
139 OLD SOLOMONS ISLAND RD, Annapolis, MD 21401
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Other Names 1

Former Legal Business NameGreenfield M.d., And Associates, P.a.

Other Identifiers 5

Medicaid081681700MD
Medicaid272251800MD
Medicaid690102600MD
Medicaid772051300MD
Medicaid151451200MD

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 21D0219878

Greenfield Associates, Md,pa · Annapolis, MD
Active · expires Apr 19, 2028
CLIA Number21D0219878
Laboratory TypePhysician Office
Certificate Effective DateApril 20, 2026
Certificate Expiration DateApril 19, 2028
Laboratory DirectorErika Benns
Laboratory Phone(410) 224-2222
Laboratory LocationGreenfield Associates, Md,pa139 Old Solomons Island Rd, Annapolis, MD 21401
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANTHONY MICHAEL CAPUTO MD
Internal Medicine
139 OLD SOLOMONS ISLAND RD
ANNAPOLIS, MD 21401
Anne Arundel County (410) 224-2222
MRS. SUSAN STUART MILLER C.R.N.P.
Nurse Practitioner
139 OLD SOLOMONS ISLAND RD
ANNAPOLIS, MD 21401
Anne Arundel County (410) 224-2222
CHARLES W PHELPS MD
Internal Medicine
139 OLD SOLOMONS ISLAND RD
ANNAPOLIS, MD 21401
Anne Arundel County (410) 224-2222
ANGELA PIERCE CRNP-FAMILY
Nurse Practitioner (Family)
139 OLD SOLOMONS ISLAND RD
ANNAPOLIS, MD 21401
Anne Arundel County (410) 224-2222
MRS. KATHRYN DIANE KARKOWSKI LCSW-C
Social Worker (Clinical)
139 OLD SOLOMONS ISLAND RD, SUITE A
ANNAPOLIS, MD 21401
Anne Arundel County (410) 266-1600
ROBERT MICHAEL GREENFIELD MD
Internal Medicine
139 OLD SOLOMONS ISLAND RD
ANNAPOLIS, MD 21401
Anne Arundel County (410) 224-2222

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Greenfield Associates, M.D., P.A.'s NPI number?

The NPI number for Greenfield Associates, M.D., P.A. is 1396770996. It was assigned to this organization in the NPPES registry on July 11, 2006. The provider was formerly known as Greenfield M.D., And Associates, P.A..

Where is Greenfield Associates, M.D., P.A. located?

Greenfield Associates, M.D., P.A. is located at 139 Old Solomons Island Rd, Annapolis, MD 21401. The listed phone number is (410) 224-2222.

What is Greenfield Associates, M.D., P.A.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Does Greenfield Associates, M.D., P.A. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 21D0219878) is associated with this NPI, valid through April 19, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Greenfield Associates, M.D., P.A. was last updated on August 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.