NPPES file of Aug 9, 2026

Matthew Kevin Rydberg, MD

Hospitalist Physician · Flagstaff, AZ

Matthew Kevin Rydberg, MD is a hospitalist physician with a practice address in Flagstaff, Arizona, and NPI 1649285446, issued on Jul 30, 2006. Check the license (Arizona 26042, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1649285446
Name
Matthew Kevin Rydberg
Credential
MD
Primary taxonomy
Hospitalist Physician 208M00000X
License number
26042 AZ
Self-reported in NPPES; status is on the state search
Practice location
1200 N Beaver St, Flagstaff, AZ 86001
Phone
(928) 214-2920
Enumerated
Jul 30, 2006
Record last updated
Jun 19, 2025
Medicaid IDs
1295993376 AZ
745135 AZ
1629236716 AZ
1780614008 AZ
Medicare enrollment
Enrolled (PECOS I20250425001143); accepts Medicare assignment
Medical or professional school
University Of Missouri, Columbia School Of Medicine, 1990
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 1200 N Beaver St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Melissa Acquaviva, CRNACertified Registered Nurse Anesthetist1639238348
  2. Michelle Aerni, D.O.Critical Care Medicine (Anesthesiology) Physician1225014822
  3. Amit Agrawal, M.D.Neonatal-Perinatal Medicine Physician1306032701
  4. Muhammad Ali, MDCritical Care Medicine (Internal Medicine) Physician1801264353
  5. Kim AllenSpeech-Language Pathologist1356580484
  6. Bianca Anderson, MS, RDRegistered Dietitian1548609431

Verify Matthew Kevin Rydberg in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 26042
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

3.6 times the Medicare Part D claims of the average hospitalist physician in 2024

1,890 Medicare Part D claims for 163 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.

  1. Matthew Rydberg1,890
  2. Specialty average521

Most prescribed

  1. Rosuvastatin Calcium152 claims
  2. Jardiance99 claims
  3. Gabapentin91 claims
  4. Omeprazole79 claims
  5. Lisinopril72 claims
  6. Lantus Solostar63 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

  1. Northern Arizona Healthcare CorporationFlagstaff, AZ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Matthew Kevin Rydberg among 775 hospitalist physician records in Arizona

Matthew Kevin Rydberg, 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 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 79% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 80% of these records are
  • Graduated1990 · 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.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Jairo Castrolondono, MDFlagstaff, AZ 860011730239310
  2. Matthew Dunn, MDFlagstaff, AZ 860011508068495
  3. Kathryn Feuquay, MDFlagstaff, AZ 860011689878530
  4. Derek Feuquay, M.D.Flagstaff, AZ 860011306040258
  5. Elizabeth Harding, M.D.Flagstaff, AZ 860011700871688
  6. Duane Lambert, MDFlagstaff, AZ 860011932137486
  7. Edward Markman, D.O.Flagstaff, AZ 860011033327119
  8. Donna Sassaman, MDFlagstaff, AZ 860011568429256

Common questions

What is Matthew Kevin Rydberg, MD's NPI number?

Matthew Kevin Rydberg, MD's National Provider Identifier (NPI) is 1649285446, issued on Jul 30, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Kevin Rydberg, MD located?

The NPPES record lists a practice address at 1200 N Beaver St, Flagstaff, AZ, 86001. Phone: (928) 214-2920. Providers update this record themselves, so call before visiting.

How can I verify Matthew Kevin Rydberg, MD's license?

NPPES lists Arizona license number 26042, 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 Matthew Kevin Rydberg, MD prescribe under Medicare Part D?

In 2024, Matthew Kevin Rydberg, MD had 1,890 Medicare Part D claims for 163 beneficiaries; the average among hospitalist physician prescribers was 521. 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.