Nana Sarkoah Ivy Fenny, M.D.
Allergy & Immunology (Internal Medicine) Physician · Green Bay, WI
Nana Sarkoah Ivy Fenny, M.D. is an allergy & immunology (internal medicine) physician with a practice address in Green Bay, Wisconsin, and NPI 1689998262, issued on Mar 25, 2010. Check the license (Wisconsin 82547-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Nana Sarkoah Ivy Fenny
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License numbers
- 82547-20 WI
036.129852 IL
Self-reported in NPPES; status is on the state search - Practice location
- 519 S Monroe Ave, Green Bay, WI 54301
- Phone
- (920) 435-6601
- Enumerated
- Mar 25, 2010
- Record last updated
- Aug 15, 2023
- Fax
- (920) 436-3840
- Medicare enrollment
- Enrolled (PECOS I20230825003247); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest allergy & immunology (internal medicine) physician records → All 22 in Wisconsin → Look up another NPI →
Also registered at 519 S Monroe Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel Chastain, APNPNurse Practitioner1942661566
- Victoria McMeen, MDAllergy & Immunology Physician1548238850
- James Warpinski, M.D.Allergy & Immunology Physician1720034515
Verify Nana Sarkoah Ivy Fenny in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 82547-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average allergy & immunology (internal medicine) physician in 2024
172 Medicare Part D claims for 48 beneficiaries, against an average of 789 among the 429 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Levocetirizine Dihydrochloride28 claims
- Ipratropium Bromide27 claims
- Montelukast Sodium16 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: $75.95
3 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 321 providers of this specialty with any payment received $7,456.30 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
- Bellin Memorial Hospital IncGreen Bay, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nana Sarkoah Ivy Fenny among 22 allergy & immunology (internal medicine) physician records in Wisconsin
Nana Sarkoah Ivy Fenny, M.D. is one of 22 allergy & immunology (internal medicine) physician records with a practice address in Wisconsin. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 73% of them.
- NPI issued2010 · 73% of these records are older, 23% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2009 · median 2003 among the 15 with a school on file
- Record last updated2023 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0201X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology (Internal Medicine) Physician providers in Wisconsin
There are 22 allergy & immunology (internal medicine) physician records in Wisconsin.
All 22 in Wisconsin → Every provider in Green Bay → Allergy & Immunology (Internal Medicine) Physician nationwide →
The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes
- Lakshmi Gopalakrishnan Nair, MDGreen Bay, WI 543041124636881
- Abhilash Vaishnav, MDDe Pere, WI 541151063529170
- Vanee Songsiridej, MDLa Crosse, WI 546011104820984
- Sujani Kakumanu, M.D.Madison, WI 537921568413839
- Delena Nguyen, MDMadison, WI 537921922757582
- Thomas Puchner, MDFitchburg, WI 537111134180045
- William Busse, MDMadison, WI 537051881661486
- Anita Gheller-Rigoni, DOOshkosh, WI 549041073543096
Common questions
What is Nana Sarkoah Ivy Fenny, M.D.'s NPI number?
Nana Sarkoah Ivy Fenny, M.D.'s National Provider Identifier (NPI) is 1689998262, issued on Mar 25, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Nana Sarkoah Ivy Fenny, M.D. located?
The NPPES record lists a practice address at 519 S Monroe Ave, Green Bay, WI, 54301. Phone: (920) 435-6601. Providers update this record themselves, so call before visiting.
How can I verify Nana Sarkoah Ivy Fenny, M.D.'s license?
NPPES lists Wisconsin license number 82547-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nana Sarkoah Ivy Fenny, M.D. prescribe under Medicare Part D?
In 2024, Nana Sarkoah Ivy Fenny, M.D. had 172 Medicare Part D claims for 48 beneficiaries; the average among allergy & immunology (internal medicine) physician prescribers was 789. 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.