Harold H. Katz, MD
Endocrinology, Diabetes & Metabolism Physician · Saint Paul, MN
Harold H. Katz, MD is an endocrinology, diabetes & metabolism physician with a practice address in Saint Paul, Minnesota, and NPI 1447211859, issued on Mar 28, 2006. Check the license (Minnesota 33098, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Harold H. Katz
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 33098 MN
Self-reported in NPPES; status is on the state search - Practice location
- 255 Smith Ave N, Saint Paul, MN 55102
- Phone
- (651) 241-5000
- Enumerated
- Mar 28, 2006
- Record last updated
- Nov 4, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (651) 241-7678
- Medicaid ID
- 732803600 MN
- Medicare enrollment
- Enrolled (PECOS I20100105000722); accepts Medicare assignment
- Medical or professional school
- Mayo Medical School, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 203 in Minnesota → Look up another NPI →
Also registered at 255 Smith Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Munir Abid, MDEndocrinology, Diabetes & Metabolism Physician1215996954
- Lisa Anderson, MDInternal Medicine Physician1023079217
- Gary Baker, MDRheumatology Physician1932168036
- Luke Benedict, MDEndocrinology, Diabetes & Metabolism Physician1972557908
- Lawrence Callanan, MDInternal Medicine Physician1124077680
- Jody Canniff, RNRegistered Nurse1538174115
Verify Harold H. Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 33098Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
8,001 Medicare Part D claims for 738 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims. 38 claims were for opioids.
Most prescribed
- Levothyroxine Sodium875 claims
- Lantus Solostar376 claims
- Atorvastatin Calcium321 claims
- Metformin Hcl Er279 claims
- Ozempic263 claims
- Synthroid255 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): 83.5 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: $411.86
6 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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
- Allina Health SystemAnnandale, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Harold H. Katz among 203 endocrinology, diabetes & metabolism physician records in Minnesota
Harold H. Katz, MD is one of 203 endocrinology, diabetes & metabolism physician records with a practice address in Minnesota. 79% 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, 48% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1986 · median 2003 among the 142 with a school on file
- Record last updated2020 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Minnesota
There are 203 endocrinology, diabetes & metabolism physician records in Minnesota.
All 203 in Minnesota → Every provider in Saint Paul → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Munir Abid, MDSaint Paul, MN 551021215996954
- Irfaan Abid, DOSaint Paul, MN 551021538692835
- Nisha Acharya, M.D.Saint Paul, MN 551021508022963
- Luke Benedict, MDSaint Paul, MN 551021972557908
- Victor Corbett, MDSaint Paul, MN 551021578526315
- Christopher Schoonover, M.D.St Paul, MN 551021497804496
- Brian Swiglo, M.D.Saint Paul, MN 551021326027954
- James Wiberg, MDSaint Paul, MN 551021154382927
Common questions
What is Harold H. Katz, MD's NPI number?
Harold H. Katz, MD's National Provider Identifier (NPI) is 1447211859, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harold H. Katz, MD located?
The NPPES record lists a practice address at 255 Smith Ave N, Saint Paul, MN, 55102. Phone: (651) 241-5000. Providers update this record themselves, so call before visiting.
How can I verify Harold H. Katz, MD's license?
NPPES lists Minnesota license number 33098, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Harold H. Katz, MD prescribe under Medicare Part D?
In 2024, Harold H. Katz, MD had 8,001 Medicare Part D claims for 738 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Harold H. Katz, MD's MIPS final score?
The 2023 MIPS final score is 83.5 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.