John Allen Garrison, D.O.
Internal Medicine Physician · Henderson, NV
John Allen Garrison, D.O. is an internal medicine physician with a practice address in Henderson, Nevada, and NPI 1902284870, issued on May 12, 2015. Check the license (Nevada DO2406, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John Allen Garrison
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- DO2406 NV
Self-reported in NPPES; status is on the state search - Practice location
- 2440 W Horizon Ridge Pkwy Ste 130, Henderson, NV 89052
- Phone
- (702) 881-8191
- Enumerated
- May 12, 2015
- Record last updated
- Aug 30, 2023
- Medicare enrollment
- Enrolled (PECOS I20191007002641); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,229 in Nevada → Look up another NPI →
Also registered at 2440 W Horizon Ridge Pkwy Ste 130
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adam Baker, PA-CPhysician Assistant1245846187
- Nancy Compton, FNP-CFamily Nurse Practitioner1366088247
- Myles Angelo Ferrer, MSN, APRN-CNP, FNP-CFamily Nurse Practitioner1760089544
- Rebecca Garcia, FNPFamily Nurse Practitioner1922648484
- Maricela Harford, APRNFamily Nurse Practitioner1316516321
- Krishanthi Jayathilaka, M.D.General Practice Physician1811296585
Verify John Allen Garrison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license DO2406Check 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 internal medicine physician in 2024
318 Medicare Part D claims for 46 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium25 claims
- Levothyroxine Sodium21 claims
- Memantine Hcl16 claims
- Pantoprazole Sodium13 claims
- Tamsulosin Hcl11 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: $1,528.21
28 payments; by number, the most common kind was food and beverage; the largest payer was Organogenesis Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 6 group practices
- CS Pacs 3 West LLCLas Vegas, NV
- Garrison Medical Consultants PLLCHenderson, NV
- Mana Medical ShliferHenderson, NV
- Nevada Acute Medical Services-Scherr 1 PCLas Vegas, NV
- Nevada Post-Acute Medical Services-Scherr 1 P.CLas Vegas, NV
- NV Pacs 2 LLCLas Vegas, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Allen Garrison among 1,229 internal medicine physician records in Nevada
John Allen Garrison, D.O. is one of 1,229 internal medicine physician records with a practice address in Nevada. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 68% of them.
- NPI issued2015 · 68% of these records are older, 30% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · median 2006 among the 772 with a school on file
- Record last updated2023 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
181 internal medicine physician records list a practice address in Henderson
They are 181 of the 7,490 NPPES records with a practice address in Henderson, and 1,229 internal medicine physician records in Nevada.
All 1,229 in Nevada → Every provider in Henderson → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Hossein Akhondi Asl, M.D.Henderson, NV 890521609862051
- Poupak Bigger, M.D.Henderson, NV 890521023010782
- Victor Bonuel, MDHenderson, NV 890521801869862
- Hugh Burt, M.D.Henderson, NV 890521972599371
- Pio Clavecilla, MDHenderson, NV 890521659349140
- Guillermo Fraga, MDHenderson, NV 890521104809433
- Robert Gong, M.D.Henderson, NV 890521265409601
- Witold Iglikowski, M.D.Henderson, NV 890521164412680
Common questions
What is John Allen Garrison, D.O.'s NPI number?
John Allen Garrison, D.O.'s National Provider Identifier (NPI) is 1902284870, issued on May 12, 2015. An NPI identifies a provider in billing; it is not a license.
Where is John Allen Garrison, D.O. located?
The NPPES record lists a practice address at 2440 W Horizon Ridge Pkwy Ste 130, Henderson, NV, 89052. Phone: (702) 881-8191. Providers update this record themselves, so call before visiting.
How can I verify John Allen Garrison, D.O.'s license?
NPPES lists Nevada license number DO2406, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Allen Garrison, D.O. prescribe under Medicare Part D?
In 2024, John Allen Garrison, D.O. had 318 Medicare Part D claims for 46 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.