Courtney Beth Isley, M.D.
Family Medicine Physician · Johnstown, CO
Courtney Beth Isley, M.D. is a family medicine physician with a practice address in Johnstown, Colorado, and NPI 1366601700, issued on Jun 2, 2008. Check the license (Colorado TL-2830, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Courtney Beth Isley
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- TL-2830 CO
Self-reported in NPPES; status is on the state search - Practice location
- 222 Johnstown Center Dr, Johnstown, CO 80534
- Phone
- (970) 587-4974
- Enumerated
- Jun 2, 2008
- Record last updated
- Oct 1, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20111108000642); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 2008
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 222 Johnstown Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Thomas Kenigsberg, M.D.Family Medicine Physician1467412650
- Krista Plate, FNPFamily Nurse Practitioner1629513767
- Ashley Schmieg, DOFamily Medicine Physician1033196498
- Angela Serrano, FNPFamily Nurse Practitioner1013624667
Verify Courtney Beth Isley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license TL-2830Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average family medicine physician in 2024
3,324 Medicare Part D claims for 271 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 53 claims were for opioids.
Most prescribed
- Levothyroxine Sodium227 claims
- Atorvastatin Calcium167 claims
- Rosuvastatin Calcium162 claims
- Amlodipine Besylate147 claims
- Lisinopril134 claims
- Losartan Potassium133 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
- Banner Health Physicians Colorado LLCGreeley, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Courtney Beth Isley among 3,563 family medicine physician records in Colorado
Courtney Beth Isley, M.D. is one of 3,563 family medicine physician records with a practice address in Colorado. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 58% of them.
- NPI issued2008 · 58% of these records are older, 38% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2008 · median 2008 among the 2,077 with a school on file
- Record last updated2012 · 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 207Q00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 family medicine physician records list a practice address in Johnstown
They are 14 of the 163 NPPES records with a practice address in Johnstown, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Johnstown → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jamison Bohl, M.D.Johnstown, CO 805341508849282
- John Brown, M.D.Johnstown, CO 805341952490153
- Mandie Dykstra Navarro, M.D.Johnstown, CO 805341689615536
- Joseph Gregory, M.D.Johnstown, CO 805341033179981
- Steven Hill, M.D.Johnstown, CO 805341316367832
- Thomas Kenigsberg, M.D.Johnstown, CO 805341467412650
- Thomas Martin, D.O.Johnstown, CO 805341811060353
- Samantha Poupore, MDJohnstown, CO 805341184150864
Common questions
What is Courtney Beth Isley, M.D.'s NPI number?
Courtney Beth Isley, M.D.'s National Provider Identifier (NPI) is 1366601700, issued on Jun 2, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Courtney Beth Isley, M.D. located?
The NPPES record lists a practice address at 222 Johnstown Center Dr, Johnstown, CO, 80534. Phone: (970) 587-4974. Providers update this record themselves, so call before visiting.
How can I verify Courtney Beth Isley, M.D.'s license?
NPPES lists Colorado license number TL-2830, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Courtney Beth Isley, M.D. prescribe under Medicare Part D?
In 2024, Courtney Beth Isley, M.D. had 3,324 Medicare Part D claims for 271 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.