NPPES file of Aug 9, 2026

Stephen Paul Castle, D.O.

Dermatology Physician · Greeley, CO

Stephen Paul Castle, D.O. is a dermatology physician with a practice address in Greeley, Colorado, and NPI 1932217742, issued on Aug 29, 2006. Check the license (Colorado 34577- COLORADO, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1932217742
Name
Stephen Paul Castle
Credential
D.O.
Primary taxonomy
Dermatology Physician 207N00000X
License number
34577- COLORADO CO
Self-reported in NPPES; status is on the state search
Practice location
7251 W 20TH St, Greeley, CO 80634
Phone
(970) 330-6075
Enumerated
Aug 29, 2006
Record last updated
May 31, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(970) 330-8962
Medicare enrollment
Enrolled (PECOS I20050913001293); accepts Medicare assignment
Medical or professional school
Des Moines University Of Osteopathic Medicine And Health Sciences, 1987
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 7251 W 20TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gregory Bjork, LPCProfessional Counselor1689079758
  2. Matthew Brighi, D.C.Chiropractor1992722722
  3. Heather CrooksMassage Therapist1144993387
  4. Stanley Edwards, MDInternal Medicine Physician1316907876
  5. Helen Frost, MSW-LCSWClinical Social Worker1528414711
  6. Katherine Giesige, PTPhysical Therapist1669495800

Verify Stephen Paul Castle in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license 34577- COLORADO
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Colorado license search

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53% more Medicare Part D claims than the average dermatology physician in 2024

1,219 Medicare Part D claims for 440 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.

  1. Stephen Castle1,219
  2. Specialty average797

Most prescribed

  1. Triamcinolone Acetonide191 claims
  2. Clobetasol Propionate143 claims
  3. Betamethasone Diprop Augmented114 claims
  4. Doxycycline Hyclate106 claims
  5. Ciclopirox78 claims
  6. Fluorouracil78 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 83.1 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score87.1
  2. Costout of 100 · 30%67.1
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $24.73

2 payments; by number, the most common kind was food and beverage; the largest payer was Strata Skin Sciences, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stephen Castle$24.73
  2. Specialty average$8,544.61

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

  1. Advanced Dermatology OF Colorado PCGreeley, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Dermatology Physician providers in Colorado

There are 305 dermatology physician records in Colorado.

Other dermatology physician records in Colorado

  1. Phillip Albright, M.D.Denver, CO1588003628
  2. Paola Aldana, MDDenver, CO1720615198
  3. Theodore Alkousakis, M.D.Aurora, CO1992830269
  4. Carol Alonso, M.D.Westminster, CO1386962256
  5. Mahsa Amir, MDParker, CO1225477359
  6. Reagan Anderson, D.O.Colorado Springs, CO1356334965
  7. Nicole Annest, M.D.Lafayette, CO1205842051
  8. Harvey Arbuckle, MDLafayette, CO1982758264
  9. Cheryl Armstrong, MDDenver, CO1194705863
  10. Harleen Arora, MDDenver, CO1205332764

Common questions

What is Stephen Paul Castle, D.O.'s NPI number?

Stephen Paul Castle, D.O.'s National Provider Identifier (NPI) is 1932217742, issued on Aug 29, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stephen Paul Castle, D.O. located?

The NPPES record lists a practice address at 7251 W 20TH St, Greeley, CO, 80634. Phone: (970) 330-6075. Providers update this record themselves, so call before visiting.

How can I verify Stephen Paul Castle, D.O.'s license?

NPPES lists Colorado license number 34577- COLORADO, 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 Stephen Paul Castle, D.O. prescribe under Medicare Part D?

In 2024, Stephen Paul Castle, D.O. had 1,219 Medicare Part D claims for 440 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

What is Stephen Paul Castle, D.O.'s MIPS final score?

The 2023 MIPS final score is 83.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.