NPPES file of Aug 9, 2026

Mark George Seredowych, M.D.

Internal Medicine Physician · Santa Fe, NM

Mark George Seredowych, M.D. is an internal medicine physician with a practice address in Santa Fe, New Mexico, and NPI 1275545782, issued on Aug 13, 2006. Check the license (New Mexico 2000-89, as entered in NPPES) on the New Mexico 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
1275545782
Name
Mark George Seredowych
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
2000-89 NM
Self-reported in NPPES; status is on the state search
Practice location
2085 S Pacheco St, Santa Fe, NM 87505
Phone
(505) 395-3050
Enumerated
Aug 13, 2006
Record last updated
Jan 12, 2026
Fax
(505) 982-5003
Medicaid ID
B4686 NM
Medicare enrollment
Enrolled (PECOS I20101112000999); accepts Medicare assignment
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.
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Also registered at 2085 S Pacheco St

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

  1. Robert Blakeburn, MDFamily Medicine Physician1164419560
  2. Ryan Commiskey, NP-CNurse Practitioner1922510577
  3. Yanet Cora Kopnina, MDFamily Medicine Physician1013545342
  4. Sara Garmon, NPAcute Care Nurse Practitioner1336801406
  5. Adam Ronan, M.D.Interventional Cardiology Physician1821244385
  6. Marcellin Simard, MDInterventional Cardiology Physician1881627479

Verify Mark George Seredowych in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Mexico Medical Board
    Search for license 2000-89
    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 New Mexico 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.

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2.1 times the Medicare Part D claims of the average internal medicine physician in 2024

6,724 Medicare Part D claims for 426 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 620 claims were for opioids.

  1. Mark Seredowych6,724
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium393 claims
  2. Amlodipine Besylate263 claims
  3. Omeprazole227 claims
  4. Oxycodone Hcl224 claims
  5. Levothyroxine Sodium218 claims
  6. Tamsulosin Hcl214 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: $1,258.06

60 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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.

  1. Mark Seredowych$1,258.06
  2. Specialty average$1,303.06

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

  1. Nexus Health Primary Care LLCSanta Fe, NM

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

Mark George Seredowych among 770 internal medicine physician records in New Mexico

Mark George Seredowych, M.D. is one of 770 internal medicine physician records with a practice address in New Mexico. 74% 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, 57% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated1987 · median 2009 among the 447 with a school on file
  • Record last updated2026 · 54% 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 New Mexico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

41 internal medicine physician records list a practice address in Santa Fe

They are 41 of the 4,551 NPPES records with a practice address in Santa Fe, and 770 internal medicine physician records in New Mexico.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Louise Abel, MDSanta Fe, NM 875051821016593
  2. Olga Andreyeva, MDSanta Fe, NM 875051356305171
  3. Boudinot Atterbury, MDSanta Fe, NM 875051720006448
  4. Avelina Bardwell, MDSanta Fe, NM 875051366469322
  5. Elisabeth Bishop, M.D.Santa Fe, NM 875051265486112
  6. John Broom, M.D.Santa Fe, NM 875051568470706
  7. Karen Endacott, MDSanta Fe, NM 875051598734717
  8. Richard Gartner, MDSanta Fe, NM 875051952377004

Common questions

What is Mark George Seredowych, M.D.'s NPI number?

Mark George Seredowych, M.D.'s National Provider Identifier (NPI) is 1275545782, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark George Seredowych, M.D. located?

The NPPES record lists a practice address at 2085 S Pacheco St, Santa Fe, NM, 87505. Phone: (505) 395-3050. Providers update this record themselves, so call before visiting.

How can I verify Mark George Seredowych, M.D.'s license?

NPPES lists New Mexico license number 2000-89, as entered by the provider. Search the New Mexico Medical Board at https://www.nmmb.state.nm.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mark George Seredowych, M.D. prescribe under Medicare Part D?

In 2024, Mark George Seredowych, M.D. had 6,724 Medicare Part D claims for 426 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.