Karen L. Pfentner, NP
Nurse Practitioner · Buffalo, NY
Karen L. Pfentner, NP is a nurse practitioner with a practice address in Buffalo, New York, and NPI 1467435594, issued on Nov 22, 2005. Check the license (New York F333676, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen L. Pfentner
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- F333676 NY
Self-reported in NPPES; status is on the state search - Practice location
- Elm And Carlton St, Buffalo, NY 14263
- Phone
- (716) 845-2300
- Enumerated
- Nov 22, 2005
- Record last updated
- Feb 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (716) 845-1004
- Medicare enrollment
- Enrolled (PECOS I20050211000434); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,097 in New York → Look up another NPI →
Also registered at Elm And Carlton St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Abel, RPHPharmacist1649578113
- Anuja AbhyankarMedical Oncology Physician1679181424
- Sara Abou Azar, M.D.Surgery Physician1689103541
- Tina Agostinelli, PAPhysician Assistant1528621885
- Eric Ahn, MDGastroenterology Physician1134528912
- Christine Aiduk, NPObstetrics & Gynecology Nurse Practitioner1255314555
Verify Karen L. Pfentner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license F333676Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average nurse practitioner in 2024
133 Medicare Part D claims for 89 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Gabapentin28 claims
- Oxycodone Hcl20 claims
- Varenicline Tartrate11 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.
Bills Medicare through one group practice
- Roswell Park Cancer InstituteWilliamsville, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen L. Pfentner among 3,097 nurse practitioner records in New York
Karen L. Pfentner, NP is one of 3,097 nurse practitioner records with a practice address in New York. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated2002 · median 2017 among the 1,360 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
221 nurse practitioner records list a practice address in Buffalo
They are 221 of the 13,287 NPPES records with a practice address in Buffalo, and 3,097 nurse practitioner records in New York.
All 3,097 in New York → Every provider in Buffalo → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Karen Brown, NPBuffalo, NY 142631659354611
- Theresa Carbone, NPBuffalo, NY 142631962485268
- Patricia Doucette, NPBuffalo, NY 142631114900420
- Nadiha Eloudi, ANPBuffalo, NY 142631104809417
- Karen Furlani, NPBuffalo, NY 142631801879036
- Margaret Gould, NPBuffalo, NY 142631114900230
- Karen Larkin, NPBuffalo, NY 142631073596920
- Lori McDougald, NPBuffalo, NY 142631982602769
Common questions
What is Karen L. Pfentner, NP's NPI number?
Karen L. Pfentner, NP's National Provider Identifier (NPI) is 1467435594, issued on Nov 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Karen L. Pfentner, NP located?
The NPPES record lists a practice address at Elm And Carlton St, Buffalo, NY, 14263. Phone: (716) 845-2300. Providers update this record themselves, so call before visiting.
How can I verify Karen L. Pfentner, NP's license?
NPPES lists New York license number F333676, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Karen L. Pfentner, NP prescribe under Medicare Part D?
In 2024, Karen L. Pfentner, NP had 133 Medicare Part D claims for 89 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.