NPPES file of Aug 9, 2026

Jennifer Lynn Keefer, M.D.

Internal Medicine Physician · Ballston Spa, NY

Jennifer Lynn Keefer, M.D. is an internal medicine physician with a practice address in Ballston Spa, New York, and NPI 1902068679, issued on Jun 25, 2008. Check the license (New York 258154, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1902068679
Name
Jennifer Lynn Keefer
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
258154 NY
Self-reported in NPPES; status is on the state search
Practice location
6010 County Farm RD, Ballston Spa, NY 12020
Phone
(518) 885-6761
Enumerated
Jun 25, 2008
Record last updated
May 1, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicaid ID
03253990 NY
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →

Verify Jennifer Lynn Keefer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 258154    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New York license search

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99% fewer Medicare Part D claims than the average internal medicine physician in 2024

19 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Jennifer Keefer19
  2. Specialty average3,176

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Jennifer Lynn Keefer among 12,067 internal medicine physician records in New York

Jennifer Lynn Keefer, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.

  • NPI issued2008 · 56% of these records are older, 40% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 60% of these records are
  • Record last updated2019 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Internal Medicine Physician providers in New York

There are 12,067 internal medicine physician records in New York.

All 12,067 in New York → Every provider in Ballston Spa → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Christine Buhlinger, DOMalta, NY 120201730145723
  2. Ravinder Saluja, MDMalta, NY 120201982694121
  3. James GaylordBallston Lake, NY 120191831273762
  4. Timothy NicholsonBurnt Hills, NY 120191013091941
  5. David Phelps, M.D.Charlton, NY 120191154340875
  6. Lynn Hickey, MDBallston Lake, NY 120181265579197
  7. Jeremiah Benoit, M.D.Broadalbin, NY 120251821257635
  8. Kathleen Verbicky, D.O.Broadalbin, NY 120251255326047

Common questions

What is Jennifer Lynn Keefer, M.D.'s NPI number?

Jennifer Lynn Keefer, M.D.'s National Provider Identifier (NPI) is 1902068679, issued on Jun 25, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Jennifer Lynn Keefer, M.D. located?

The NPPES record lists a practice address at 6010 County Farm RD, Ballston Spa, NY, 12020. Phone: (518) 885-6761. Providers update this record themselves, so call before visiting.

How can I verify Jennifer Lynn Keefer, M.D.'s license?

NPPES lists New York license number 258154, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jennifer Lynn Keefer, M.D. prescribe under Medicare Part D?

In 2024, Jennifer Lynn Keefer, M.D. had 19 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.