Diedrich K. Holtkamp, MD
Vascular Surgery Physician · Brooklyn, NY
Diedrich K. Holtkamp, MD is a vascular surgery physician with a practice address in Brooklyn, New York, and NPI 1225041825, issued on Aug 14, 2006. Check the license (New York 128889, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Diedrich K. Holtkamp
- Credential
- MD
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License number
- 128889 NY
Self-reported in NPPES; status is on the state search - Practice location
- 541 Bay Ridge Parkway, Brooklyn, NY 11209
- Phone
- (718) 748-6451
- Enumerated
- Aug 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (718) 921-4534
- Medicaid ID
- 00396474 NY
- Medicare enrollment
- Enrolled (PECOS I20080110000696); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 412 in New York → Look up another NPI →
Verify Diedrich K. Holtkamp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 128889Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average vascular surgery physician in 2024
62 Medicare Part D claims, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole11 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.
Industry payments in 2024: $4.13
1 payment: food and beverage; the largest payer was Advanced Oxygen Therapy Inc. The 4,059 providers of this specialty with any payment received $6,178.00 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
- Physician Affiliate Group OF New York PCBrooklyn, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diedrich K. Holtkamp among 412 vascular surgery physician records in New York
Diedrich K. Holtkamp, MD is one of 412 vascular surgery physician records with a practice address in New York. 89% 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, 47% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated1972 · median 1998 among the 331 with a school on file
- Record last updated2007 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular Surgery Physician providers in New York
There are 412 vascular surgery physician records in New York.
All 412 in New York → Every provider in Brooklyn → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- Michael Kassouf, MDBrooklyn, NY 112091609812528
- Sampath Kumar, M.D.Brooklyn, NY 112091144280538
- Vittorio Rotella, M.D.Brooklyn, NY 112091356592356
- Gary Gelbfish, M.D.Brooklyn, NY 112101275508954
- Paul Haser, MDBrooklyn, NY 112121164487724
- Dinker RaiBrooklyn, NY 112131881798486
- Bakir Altai, M.D.Brooklyn, NY 112151275628182
- Justin Choi, M.D.Brooklyn, NY 112031306167622
Common questions
What is Diedrich K. Holtkamp, MD's NPI number?
Diedrich K. Holtkamp, MD's National Provider Identifier (NPI) is 1225041825, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diedrich K. Holtkamp, MD located?
The NPPES record lists a practice address at 541 Bay Ridge Parkway, Brooklyn, NY, 11209. Phone: (718) 748-6451. Providers update this record themselves, so call before visiting.
How can I verify Diedrich K. Holtkamp, MD's license?
NPPES lists New York license number 128889, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Diedrich K. Holtkamp, MD prescribe under Medicare Part D?
In 2024, Diedrich K. Holtkamp, MD had 62 Medicare Part D claims; the average among vascular surgery physician prescribers was 201. 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.