Horst Filtzer, M.D.
Internal Medicine Physician · Bullhead City, AZ
Horst Filtzer, M.D. is an internal medicine physician with a practice address in Bullhead City, Arizona, and NPI 1417018862, issued on Dec 12, 2006. Check the license (Arizona 35139, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Horst Filtzer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 35139 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1555 Ramar RD, Bullhead City, AZ 86442
- Phone
- (928) 299-3087
- Enumerated
- Dec 12, 2006
- Record last updated
- Sep 18, 2025
- Fax
- (480) 919-1166
- Medicaid IDs
- 2004879 MA
192396 AZ - Medicare enrollment
- Enrolled (PECOS I20070430000625); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1965
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Verify Horst Filtzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 35139Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,824 Medicare Part D claims for 194 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 33 claims were for opioids.
Most prescribed
- Levothyroxine Sodium97 claims
- Atorvastatin Calcium92 claims
- Trazodone Hcl71 claims
- Amlodipine Besylate65 claims
- Metoprolol Tartrate47 claims
- Losartan Potassium45 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): 80.5 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).
Industry payments in 2024: $92.73
3 payments; by number, the most common kind was food and beverage; the largest payer was Amgen 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 one group practice
- Link Medical IncBullhead City, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Horst Filtzer among 2,853 internal medicine physician records in Arizona
Horst Filtzer, M.D. 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1965 · median 2003 among the 1,643 with a school on file
- Record last updated2025 · 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).
14 internal medicine physician records list a practice address in Bullhead City
They are 14 of the 403 NPPES records with a practice address in Bullhead City, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Bullhead City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nabila Aslam, M.D.Bullhead City, AZ 864421922089127
- Abdul Aziz, MDBullhead City, AZ 864421003943184
- Ihtisham Choudhry, MDBullhead City, AZ 864421790985273
- Thomas Dallman, M.D.Bullhead City, AZ 864421568643757
- Mohmed Imran Gora, M.D.Bullhead City, AZ 864421841643590
- Javed Malik, M.D.Bullhead City, AZ 864421487652350
- Tyler Primavera, D.O.Bullhead City, AZ 864421972965127
- Lawrence Rothenberg, M.D.Bullhead City, AZ 864421104809367
Common questions
What is Horst Filtzer, M.D.'s NPI number?
Horst Filtzer, M.D.'s National Provider Identifier (NPI) is 1417018862, issued on Dec 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Horst Filtzer, M.D. located?
The NPPES record lists a practice address at 1555 Ramar RD, Bullhead City, AZ, 86442. Phone: (928) 299-3087. Providers update this record themselves, so call before visiting.
How can I verify Horst Filtzer, M.D.'s license?
NPPES lists Arizona license number 35139, 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 Horst Filtzer, M.D. prescribe under Medicare Part D?
In 2024, Horst Filtzer, M.D. had 1,824 Medicare Part D claims for 194 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Horst Filtzer, M.D.'s MIPS final score?
The 2023 MIPS final score is 80.5 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.