Nathan John Dennison, DO
Internal Medicine Physician · Phoenix, AZ
Nathan John Dennison, DO is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1871098756, issued on Mar 24, 2018. Check the license (Arizona 009133, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nathan John Dennison
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 009133 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 500 W Thomas RD Ste 900A, Phoenix, AZ 85013
- Phone
- (602) 406-3540
- Enumerated
- Mar 24, 2018
- Record last updated
- Dec 13, 2024
- Fax
- (602) 406-7186
- Medicare enrollment
- Enrolled (PECOS I20210806000247); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 500 W Thomas RD Ste 900A
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nathan John Dennison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 009133Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% more Medicare Part D claims than the average internal medicine physician in 2024
4,668 Medicare Part D claims for 352 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 62 claims were for opioids.
Most prescribed
- Atorvastatin Calcium339 claims
- Amlodipine Besylate211 claims
- Levothyroxine Sodium209 claims
- Lisinopril176 claims
- Metformin Hcl175 claims
- Albuterol Sulfate Hfa145 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.
Bills Medicare through one group practice
- Sjhmc Physician ServicesPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan John Dennison among 2,853 internal medicine physician records in Arizona
Nathan John Dennison, DO is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 77% of them.
- NPI issued2018 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2018 · median 2003 among the 1,643 with a school on file
- Record last updated2024 · 51% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Phoenix → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Paul Benchwick, D.O.Phoenix, AZ 850131346220134
- James Blair, MDPhoenix, AZ 850131780631044
- Obinna Egbo, M.D.Phoenix, AZ 850131992768378
- Sonal Haerter, M.D.Phoenix, AZ 850131619980737
- Matthew Hemstreet, M.D.Phoenix, AZ 850131275553182
- Steve Ibrahim, D.O.Phoenix, AZ 850131174634547
- Jasmine Kelley, MDPhoenix, AZ 850131568444644
- Caroline Kim Kupfer, M.D.Phoenix, AZ 850131083643480
Common questions
What is Nathan John Dennison, DO's NPI number?
Nathan John Dennison, DO's National Provider Identifier (NPI) is 1871098756, issued on Mar 24, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Nathan John Dennison, DO located?
The NPPES record lists a practice address at 500 W Thomas RD Ste 900A, Phoenix, AZ, 85013. Phone: (602) 406-3540. Providers update this record themselves, so call before visiting.
How can I verify Nathan John Dennison, DO's license?
NPPES lists Arizona license number 009133, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathan John Dennison, DO prescribe under Medicare Part D?
In 2024, Nathan John Dennison, DO had 4,668 Medicare Part D claims for 352 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.