Joanna Catherine Grosskopf, FNP
Family Nurse Practitioner · Williamsville, NY
Joanna Catherine Grosskopf, FNP is a family nurse practitioner with a practice address in Williamsville, New York, and NPI 1902438039, issued on Feb 6, 2020. Check the license (New York 345394, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joanna Catherine Grosskopf
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 345394 NY
Self-reported in NPPES; status is on the state search - Practice location
- 18 Limestone Dr Ste 5, Williamsville, NY 14221
- Phone
- (716) 632-1400
- Enumerated
- Feb 6, 2020
- Record last updated
- Jun 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (716) 691-3404
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 14,805 in New York → Look up another NPI →
Also registered at 18 Limestone Dr Ste 5
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Olivia Haight, PHARMDPharmacist1851085484
- Divjot Kaur, PA-CPhysician Assistant1285466532
- Carrie McPherson, RPAPhysician Assistant1306040480
- Samantha OlewnikPhysician Assistant1568293363
- Tori Riter, CDN, RDNRegistered Dietitian1679433254
Verify Joanna Catherine Grosskopf 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 345394Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average family nurse practitioner in 2024
983 Medicare Part D claims for 268 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Lisinopril46 claims
- Atorvastatin Calcium40 claims
- Metformin Hcl32 claims
- Amlodipine Besylate30 claims
- Prednisone29 claims
- Rosuvastatin Calcium29 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: $795.08
36 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
Joanna Catherine Grosskopf among 14,805 family nurse practitioner records in New York
Joanna Catherine Grosskopf, FNP is one of 14,805 family nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 58% of them.
- NPI issued2020 · 58% of these records are older, 37% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 49% of these records are
- Record last updated2021 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
118 family nurse practitioner records list a practice address in Williamsville
They are 118 of the 3,530 NPPES records with a practice address in Williamsville, and 14,805 family nurse practitioner records in New York.
All 14,805 in New York → Every provider in Williamsville → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Crystal Breier, FNPWilliamsville, NY 142211558328112
- Karen Burch, FNPWilliamsville, NY 142211083679443
- Joanne Chmura, FNPWilliamsville, NY 142211982653960
- Karen Gutierrez, FNPWilliamsville, NY 142211659365500
- Susan Klein, FNPWilliamsville, NY 142211699715581
- Kathy Kurtz, F.N.P.Williamsville, NY 142211578560397
- Kimberly Macdonald, F.N.P.Williamsville, NY 142211598722365
- Linda Miller, FNPWilliamsville, NY 142211679530208
Common questions
What is Joanna Catherine Grosskopf, FNP's NPI number?
Joanna Catherine Grosskopf, FNP's National Provider Identifier (NPI) is 1902438039, issued on Feb 6, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Catherine Grosskopf, FNP located?
The NPPES record lists a practice address at 18 Limestone Dr Ste 5, Williamsville, NY, 14221. Phone: (716) 632-1400. Providers update this record themselves, so call before visiting.
How can I verify Joanna Catherine Grosskopf, FNP's license?
NPPES lists New York license number 345394, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Joanna Catherine Grosskopf, FNP prescribe under Medicare Part D?
In 2024, Joanna Catherine Grosskopf, FNP had 983 Medicare Part D claims for 268 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.