Jennifer L. Koester, MSN, APRN, FNP-C
Family Medicine Physician · Lakeville, MA
Jennifer L. Koester, MSN, APRN, FNP-C is a family medicine physician with a practice address in Lakeville, Massachusetts, and NPI 1407446909, issued on Jan 19, 2021. Check the license (Massachusetts RN2337272, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Jennifer L. Koester
- Credential
- MSN, APRN, FNP-C
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- RN2337272 MA
Self-reported in NPPES; status is on the state search - Practice location
- 5 Precinct St, Lakeville, MA 02347
- Phone
- (508) 947-6666
- Enumerated
- Jan 19, 2021
- Record last updated
- Jan 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20230109002029); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 5 Precinct St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Gagnon, MDFamily Medicine Physician1124090493
Verify Jennifer L. Koester in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license RN2337272Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average family medicine physician in 2024
1,486 Medicare Part D claims for 298 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 56 claims were for opioids.
Most prescribed
- Omeprazole85 claims
- Lisinopril75 claims
- Amlodipine Besylate69 claims
- Albuterol Sulfate Hfa53 claims
- Metoprolol Succinate50 claims
- Levothyroxine Sodium46 claims
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.
Industry payments in 2024: $430.70
19 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Lakeville Family Medicine PCLakeville, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
4 family medicine physician records list a practice address in Lakeville
They are 4 of the 141 NPPES records with a practice address in Lakeville, and 2,265 family medicine physician records in Massachusetts.
All 4 in Lakeville → All 2,265 in Massachusetts → Every provider in Lakeville →
Other family medicine physician records in Massachusetts
- Salah Abass, M.D.Methuen, MA1417959776
- Majed Abbas, MDLowell, MA1346827870
- Sheila Abdallah, MDWorcester, MA1821356312
- Omar Abduljabar, M.D.Springfield, MA1770978843
- Jonathan Abel, DOSpringfield, MA1700897196
- Mohamed Abib, MDSturbridge, MA1639281090
- Kevin Abraham, M.D.Worcester, MA1689037673
- Janet Abrahamian, M.D.West Boylston, MA1932156627
- John Abramson, M.D.Ipswich, MA1275613903
- John Paul Abroguena, MDPlainville, MA1235361080
Common questions
What is Jennifer L. Koester, MSN, APRN, FNP-C's NPI number?
Jennifer L. Koester, MSN, APRN, FNP-C's National Provider Identifier (NPI) is 1407446909, issued on Jan 19, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer L. Koester, MSN, APRN, FNP-C located?
The NPPES record lists a practice address at 5 Precinct St, Lakeville, MA, 02347. Phone: (508) 947-6666. Providers update this record themselves, so call before visiting.
How can I verify Jennifer L. Koester, MSN, APRN, FNP-C's license?
NPPES lists Massachusetts license number RN2337272, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jennifer L. Koester, MSN, APRN, FNP-C prescribe under Medicare Part D?
In 2024, Jennifer L. Koester, MSN, APRN, FNP-C had 1,486 Medicare Part D claims for 298 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.
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.