Aaron Robert Block, M.D., M.P.H.
Family Medicine Physician · Castle Rock, CO
Aaron Robert Block, M.D., M.P.H. is a family medicine physician with a practice address in Castle Rock, Colorado, and NPI 1437578762, issued on Apr 15, 2014. Check the license (Colorado DR.0067691, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Aaron Robert Block
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- DR.0067691 CO
35.128986 OH
Self-reported in NPPES; status is on the state search - Practice location
- 4350 Limelight Ave Unit 200, Castle Rock, CO 80109
- Phone
- (303) 970-8190
- Enumerated
- Apr 15, 2014
- Record last updated
- Aug 6, 2024
- Medicare enrollment
- Enrolled (PECOS I20220526001140); may accept Medicare assignment
- Medical or professional school
- University Of South Florida College Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Verify Aaron Robert Block in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0067691Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average family medicine physician in 2024
356 Medicare Part D claims for 232 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone56 claims
- Doxycycline Hyclate49 claims
- Cephalexin41 claims
- Methylprednisolone25 claims
- Amoxicillin-Clavulanate Potass19 claims
- Azithromycin11 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: $878.31
15 payments; by number, the most common kind was food and beverage; the largest payer was Amgen 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.
Aaron Robert Block among 3,563 family medicine physician records in Colorado
Aaron Robert Block, M.D., M.P.H. 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 2014, is newer than 74% of them.
- NPI issued2014 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2014 · median 2008 among the 2,077 with a school on file
- Record last updated2024 · 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).
45 family medicine physician records list a practice address in Castle Rock
They are 45 of the 1,319 NPPES records with a practice address in Castle Rock, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Castle Rock → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Carla Bregni-Page, DOCastle Rock, CO 801091336139534
- Jennifer Daly, D.O.Castle Rock, CO 801091851656623
- Kristin Edwards, DOCastle Rock, CO 801091518607563
- Jodie Gahn-Stahley, PACastle Rock, CO 801091508012865
- Marco Gomez, MDCastle Rock, CO 801091811171572
- Dalton Mackay, MDCastle Rock, CO 801091801079488
- Brandon Stucky, MDCastle Rock, CO 801091841729217
- Francis Thompson, MDCastle Rock, CO 801091861640468
Common questions
What is Aaron Robert Block, M.D., M.P.H.'s NPI number?
Aaron Robert Block, M.D., M.P.H.'s National Provider Identifier (NPI) is 1437578762, issued on Apr 15, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Robert Block, M.D., M.P.H. located?
The NPPES record lists a practice address at 4350 Limelight Ave Unit 200, Castle Rock, CO, 80109. Phone: (303) 970-8190. Providers update this record themselves, so call before visiting.
How can I verify Aaron Robert Block, M.D., M.P.H.'s license?
NPPES lists Colorado license number DR.0067691, 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 Aaron Robert Block, M.D., M.P.H. prescribe under Medicare Part D?
In 2024, Aaron Robert Block, M.D., M.P.H. had 356 Medicare Part D claims for 232 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.