Guy Chadwick Asher, M.D.
Nephrology Physician · Fort Wayne, IN
Guy Chadwick Asher, M.D. is a nephrology physician with a practice address in Fort Wayne, Indiana, and NPI 1396731212, issued on Sep 26, 2005. Check the license (Indiana 01064470A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Guy Chadwick Asher
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 01064470A IN
35.076178 OH
Self-reported in NPPES; status is on the state search - Practice location
- 7836 W Jefferson Blvd, Fort Wayne, IN 46804
- Phone
- (260) 494-3484
- Enumerated
- Sep 26, 2005
- Record last updated
- Apr 28, 2025
- Fax
- (260) 969-0188
- Medicaid ID
- 200894460 IN
- Medicare enrollment
- Enrolled (PECOS I20080530000192); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 265 in Indiana → Look up another NPI →
Also registered at 7836 W Jefferson Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie Barrido, M.D.Nephrology Physician1063460848
- John Ducker, MDNephrology Physician1003868597
- Sajjad Habib, MDNephrology Physician1528019619
- Andrew O'Shaughnessy, MDNephrology Physician1568416865
- Andrea Rosen, RNRegistered Nurse1356150429
Verify Guy Chadwick Asher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01064470ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% more Medicare Part D claims than the average nephrology physician in 2024
2,240 Medicare Part D claims for 340 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Amlodipine Besylate181 claims
- Hydralazine Hcl154 claims
- Carvedilol147 claims
- Sevelamer Carbonate126 claims
- Losartan Potassium106 claims
- Valsartan92 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: $628.50
44 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Nephrology Associates OF Northern Indiana PCVan Wert, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Guy Chadwick Asher among 265 nephrology physician records in Indiana
Guy Chadwick Asher, M.D. is one of 265 nephrology physician records with a practice address in Indiana. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 74% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1997 · median 2000 among the 200 with a school on file
- Record last updated2025 · 29% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Indiana
There are 265 nephrology physician records in Indiana.
All 265 in Indiana → Every provider in Fort Wayne → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Mohammad Ali Al Mahdawi, M.DFort Wayne, IN 468041992236749
- Melanie Barrido, M.D.Fort Wayne, IN 468041063460848
- Robert Dettmer, M.D.Fort Wayne, IN 468041326319724
- John Ducker, MDFort Wayne, IN 468041003868597
- Samuel Eby, MDFort Wayne, IN 468041043262447
- Sajjad Habib, MDFort Wayne, IN 468041528019619
- Prasanna Isaac, M.D.Fort Wayne, IN 468041881899276
- Swapna Joseph, MDFort Wayne, IN 468041710938592
Common questions
What is Guy Chadwick Asher, M.D.'s NPI number?
Guy Chadwick Asher, M.D.'s National Provider Identifier (NPI) is 1396731212, issued on Sep 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Guy Chadwick Asher, M.D. located?
The NPPES record lists a practice address at 7836 W Jefferson Blvd, Fort Wayne, IN, 46804. Phone: (260) 494-3484. Providers update this record themselves, so call before visiting.
How can I verify Guy Chadwick Asher, M.D.'s license?
NPPES lists Indiana license number 01064470A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Guy Chadwick Asher, M.D. prescribe under Medicare Part D?
In 2024, Guy Chadwick Asher, M.D. had 2,240 Medicare Part D claims for 340 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.