David P. Los, DO
Family Medicine Physician · Tucson, AZ
David P. Los, DO is a family medicine physician with a practice address in Tucson, Arizona, and NPI 1598741720, issued on Dec 20, 2005. Check the license (Arizona 3507, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- David P. Los
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 3507 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 551 W Magee RD, Tucson, AZ 85704
- Phone
- (520) 498-6467
- Enumerated
- Dec 20, 2005
- Record last updated
- Jul 22, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (520) 531-1424
- Medicare enrollment
- Enrolled (PECOS I20050921001048); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 1998
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at 551 W Magee RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Barbara Caldwell, M.D.Family Medicine Physician1861475345
- Katharine Castillo, NPFamily Nurse Practitioner1912435009
- Dana Denney, MA LPCProfessional Counselor1982933081
- Diana Gomez, FNPFamily Nurse Practitioner1912986068
- Bill Holloman, MDInternal Medicine Physician1356307771
Verify David P. Los in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 3507Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average family medicine physician in 2024
10,058 Medicare Part D claims for 858 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 24 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,105 claims
- Losartan Potassium505 claims
- Levothyroxine Sodium483 claims
- Lisinopril469 claims
- Amlodipine Besylate443 claims
- Metformin Hcl386 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
- Tucson Physician Group Holdings LLCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David P. Los among 3,119 family medicine physician records in Arizona
David P. Los, DO is one of 3,119 family 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1998 · median 2006 among the 1,775 with a school on file
- Record last updated2011 · 54% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
554 family medicine physician records list a practice address in Tucson
They are 554 of the 18,788 NPPES records with a practice address in Tucson, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Tucson → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Raymond Bakotic, D.O.Tucson, AZ 857041285613216
- Barbara Caldwell, M.D.Tucson, AZ 857041861475345
- John Carmichael, MDTucson, AZ 857041881675254
- Vivian Castillo, M.D.Tucson, AZ 857041790732105
- Susan Courtney, MDTucson, AZ 857041700840352
- Steven Downing, MDTucson, AZ 857041336123199
- Irene Duarte, MDTucson, AZ 857041336188093
- William Inboden, D.O.Tucson, AZ 857041528043395
Common questions
What is David P. Los, DO's NPI number?
David P. Los, DO's National Provider Identifier (NPI) is 1598741720, issued on Dec 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David P. Los, DO located?
The NPPES record lists a practice address at 551 W Magee RD, Tucson, AZ, 85704. Phone: (520) 498-6467. Providers update this record themselves, so call before visiting.
How can I verify David P. Los, DO's license?
NPPES lists Arizona license number 3507, 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 David P. Los, DO prescribe under Medicare Part D?
In 2024, David P. Los, DO had 10,058 Medicare Part D claims for 858 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.