Samuel Loeffelbein Martin, MD
Hospitalist Physician · Flagstaff, AZ
Samuel Loeffelbein Martin, MD is a hospitalist physician with a practice address in Flagstaff, Arizona, and NPI 1245882372, issued on Jul 9, 2019. Check the license (Arizona 69323, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Samuel Loeffelbein Martin
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 69323 AZ
8531 NE
Self-reported in NPPES; status is on the state search - Practice location
- 1200 N Beaver St, Flagstaff, AZ 86001
- Phone
- (928) 779-3366
- Enumerated
- Jul 9, 2019
- Record last updated
- Oct 7, 2025
- Medicare enrollment
- Enrolled (PECOS I20230717001285); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 775 in Arizona → Look up another NPI →
Also registered at 1200 N Beaver St
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Verify Samuel Loeffelbein Martin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 69323Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average hospitalist physician in 2024
229 Medicare Part D claims for 101 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Prednisone13 claims
- Oxycodone Hcl12 claims
- Levothyroxine Sodium11 claims
- Pantoprazole Sodium11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 77 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Northern Arizona Healthcare CorporationFlagstaff, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Samuel Loeffelbein Martin among 775 hospitalist physician records in Arizona
Samuel Loeffelbein Martin, MD is one of 775 hospitalist physician records with a practice address in Arizona. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 79% of them.
- NPI issued2019 · 79% of these records are older, 16% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2019 · median 2011 among the 618 with a school on file
- Record last updated2025 · 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 208M00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 hospitalist physician records list a practice address in Flagstaff
They are 31 of the 2,419 NPPES records with a practice address in Flagstaff, and 775 hospitalist physician records in Arizona.
All 775 in Arizona → Every provider in Flagstaff → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jairo Castrolondono, MDFlagstaff, AZ 860011730239310
- Matthew Dunn, MDFlagstaff, AZ 860011508068495
- Kathryn Feuquay, MDFlagstaff, AZ 860011689878530
- Derek Feuquay, M.D.Flagstaff, AZ 860011306040258
- Elizabeth Harding, M.D.Flagstaff, AZ 860011700871688
- Duane Lambert, MDFlagstaff, AZ 860011932137486
- Edward Markman, D.O.Flagstaff, AZ 860011033327119
- Matthew Rydberg, MDFlagstaff, AZ 860011649285446
Common questions
What is Samuel Loeffelbein Martin, MD's NPI number?
Samuel Loeffelbein Martin, MD's National Provider Identifier (NPI) is 1245882372, issued on Jul 9, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Samuel Loeffelbein Martin, MD located?
The NPPES record lists a practice address at 1200 N Beaver St, Flagstaff, AZ, 86001. Phone: (928) 779-3366. Providers update this record themselves, so call before visiting.
How can I verify Samuel Loeffelbein Martin, MD's license?
NPPES lists Arizona license number 69323, 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 Samuel Loeffelbein Martin, MD prescribe under Medicare Part D?
In 2024, Samuel Loeffelbein Martin, MD had 229 Medicare Part D claims for 101 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Samuel Loeffelbein Martin, MD's MIPS final score?
The 2023 MIPS final score is 77 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.