John Ryan Marlin, M.D.
Family Medicine Physician · Delta, CO
John Ryan Marlin, M.D. is a family medicine physician with a practice address in Delta, Colorado, and NPI 1598846370, issued on Oct 18, 2006. Check the license (Colorado 44832, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Ryan Marlin
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 44832 CO
Self-reported in NPPES; status is on the state search - Practice location
- 555 Meeker St, Delta, CO 81416
- Phone
- (970) 874-5777
- Enumerated
- Oct 18, 2006
- Record last updated
- Dec 3, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 26839237 CO
- Medicare enrollment
- Enrolled (PECOS I20090203000400); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 555 Meeker St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lee Bules, D.O.Family Medicine Physician1427015320
- Desiree KarlenStudent in an Organized Health Care Education/Training Program1437918463
- Samuel Kevan, M.D.Family Medicine Physician1457317703
- Bruce Mixter, M.D.Family Medicine Physician1316904188
- Julie Mixter, M.D.Family Medicine Physician1174589238
- Cheryl Smith, R.N., F.N.P.Nurse Practitioner1740247352
Verify John Ryan Marlin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 44832Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
82 Medicare Part D claims for 32 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium11 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: $21.69
1 payment: food and beverage; the largest payer was Organogenesis Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
One hospital affiliation
- Delta County Memorial HospitalDelta, CO · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
John Ryan Marlin among 3,563 family medicine physician records in Colorado
John Ryan Marlin, 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 56% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2005 · median 2008 among the 2,077 with a school on file
- Record last updated2013 · 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).
17 family medicine physician records list a practice address in Delta
They are 17 of the 331 NPPES records with a practice address in Delta, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Delta → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Susan Bright, MDDelta, CO 814161235196833
- Amanda Bristol Swanson, M.D.Delta, CO 814161376704445
- Lee Bules, D.O.Delta, CO 814161427015320
- Larry Dillon, MDDelta, CO 814161548328008
- Samuel Kevan, M.D.Delta, CO 814161457317703
- Matthew Lebsack, MDDelta, CO 814161144640517
- Julie Mixter, M.D.Delta, CO 814161174589238
- Bruce Mixter, M.D.Delta, CO 814161316904188
Common questions
What is John Ryan Marlin, M.D.'s NPI number?
John Ryan Marlin, M.D.'s National Provider Identifier (NPI) is 1598846370, issued on Oct 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Ryan Marlin, M.D. located?
The NPPES record lists a practice address at 555 Meeker St, Delta, CO, 81416. Phone: (970) 874-5777. Providers update this record themselves, so call before visiting.
How can I verify John Ryan Marlin, M.D.'s license?
NPPES lists Colorado license number 44832, 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 John Ryan Marlin, M.D. prescribe under Medicare Part D?
In 2024, John Ryan Marlin, M.D. had 82 Medicare Part D claims for 32 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.