Nickolas Grant Harker, M.D.
Family Medicine Physician · Casper, WY
Nickolas Grant Harker, M.D. is a family medicine physician with a practice address in Casper, Wyoming, and NPI 1598028698, issued on Jun 22, 2012. Check the license (Wyoming 9701A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Nickolas Grant Harker
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 9701A WY
Self-reported in NPPES; status is on the state search - Practice location
- 3632 American Way Ste A, Casper, WY 82601
- Phone
- (307) 234-6765
- Enumerated
- Jun 22, 2012
- Record last updated
- Jan 25, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (307) 234-6998
- Medicare enrollment
- Enrolled (PECOS I20161011001022); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 400 in Wyoming → Look up another NPI →
Verify Nickolas Grant Harker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 9701ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family medicine physician in 2024
110 Medicare Part D claims for 83 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Monohydrate20 claims
- Prednisone18 claims
- Cefdinir12 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
- Ihc Health Services IncOrem, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nickolas Grant Harker among 400 family medicine physician records in Wyoming
Nickolas Grant Harker, M.D. is one of 400 family medicine physician records with a practice address in Wyoming. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 63% of them.
- NPI issued2012 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2012 · median 2009 among the 229 with a school on file
- Record last updated2016 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
85 family medicine physician records list a practice address in Casper
They are 85 of the 1,924 NPPES records with a practice address in Casper, and 400 family medicine physician records in Wyoming.
All 400 in Wyoming → Every provider in Casper → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sean Beyer, MDCasper, WY 826011700809209
- Eugene Duquette, D.O.Casper, WY 826011174573661
- Dana Ideen, M.D.Casper, WY 826011558375477
- Sharon Karnes, M.D.Casper, WY 826011962440487
- Nathan KerCasper, WY 826011689699589
- Jason LloydCasper, WY 826011841298536
- Michael Miller, DOCasper, WY 826011548201213
- Jeffrey Preston, M.D.Casper, WY 826011508891078
Common questions
What is Nickolas Grant Harker, M.D.'s NPI number?
Nickolas Grant Harker, M.D.'s National Provider Identifier (NPI) is 1598028698, issued on Jun 22, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Nickolas Grant Harker, M.D. located?
The NPPES record lists a practice address at 3632 American Way Ste A, Casper, WY, 82601. Phone: (307) 234-6765. Providers update this record themselves, so call before visiting.
How can I verify Nickolas Grant Harker, M.D.'s license?
NPPES lists Wyoming license number 9701A, as entered by the provider. Search the Wyoming Board of Medicine at https://wyomedboard.wyo.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nickolas Grant Harker, M.D. prescribe under Medicare Part D?
In 2024, Nickolas Grant Harker, M.D. had 110 Medicare Part D claims for 83 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.