Doctor profile · Federal record

Dr. Aaron Block, M.D., M.P.H.

Family Medicine Physician · Family Medicine Physician · Castle Rock, CO

  • NPI 1437578762
  • 12 yrs on file
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
4350 Limelight Ave Unit 200
Castle Rock, CO 801098034
(303) 970-8190

Credentials & registration

NPPES · NUCC
NPI registered
April 2014 — 12 yrs on file
Profile last updated
August 6, 2024
Specialty taxonomy
207Q00000X — NUCC code
State licenses (2)
Colorado #DR.0067691 · Ohio #35.128986

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1437578762. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
680
Distinct HCPCS
10
Medicare allowed
$40,323
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 191 177 $93
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg 186 28 $1
99214 Established patient office or other outpatient visit, 30-39 minutes 64 62 $131
81002 Urinalysis, manual test 49 44 $3
96372 Injection of drug or substance under skin or into muscle 43 40 $15
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 34 34 $35
99215 Established patient office or other outpatient visit, 40-54 minutes 33 32 $178
99203 New patient office or other outpatient visit, 30-44 minutes 27 27 $115
87804 Detection test by immunoassay with direct visual observation for influenza virus 22 11 $16
87636 Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19) and influenza virus types a and b 18 17 $140

In context: peer comparison

Among 8 peers in Castle Rock Family Medicine Physician, average services per provider: 167. This provider delivers 4.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$878
Transactions
15
Manufacturers
7
Payer (manufacturer) Industry Txns Amount
Amgen INC. 4 $328.12
AstraZeneca Pharmaceuticals Lp 4 $190.95
ViiV Healthcare Company 3 $164.60
Abiomed 1 $117.02
Lucid Diagnostics INC. 1 $37.38
Pfizer INC. 1 $22.89
Exeltis, USA INC. 1 $17.35

By nature of payment

Food and Beverage
$878

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
360
Patients
335
Total drug cost
$4,866
Drug Type Claims Patients Total cost
Cephalexin Generic 61 60 $218
Doxycycline Hyclate Generic 57 56 $902
Ipratropium Bromide Generic 52 47 $1,765
Prednisone Generic 45 44 $117
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 28 22 $798
Methylprednisolone Generic 26 26 $232
Paxlovid (Eua) (Nirmatrelvir/Ritonavir) Brand 24 24 $255
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 23 23 $236
Azithromycin Generic 19 19 $72
Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) Brand 14 14 $199

Frequently asked questions

Auto-generated from federal data
What is Dr. Aaron Block's medical specialty?
Dr. Aaron Block practices Family Medicine Physician in Castle Rock, CO.
Where does Dr. Aaron Block practice?
Dr. Aaron Block practices at 4350 Limelight Ave Unit 200, Castle Rock, CO 801098034. Office phone: 3039708190.
What is Dr. Aaron Block's NPI?
Dr. Aaron Block's National Provider Identifier (NPI) is 1437578762, issued by NPPES.
What procedures does Dr. Aaron Block commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.