Marek Tadeusz Skowron, M.D.
Internal Medicine Physician · Modesto, CA
Marek Tadeusz Skowron, M.D. is an internal medicine physician with a practice address in Modesto, California, and NPI 1770548646, issued on Apr 20, 2006. Check the license (California A92738, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marek Tadeusz Skowron
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A92738 CA
Self-reported in NPPES; status is on the state search - Practice location
- 600 Coffee RD, Modesto, CA 95355
- Phone
- (209) 524-1211
- Enumerated
- Apr 20, 2006
- Record last updated
- Apr 10, 2025
- Medicaid ID
- 00A927380 CA
- Medicare enrollment
- Enrolled (PECOS I20051103001195); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 600 Coffee RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marek Tadeusz Skowron in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A92738Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.8 times the Medicare Part D claims of the average internal medicine physician in 2024
18,376 Medicare Part D claims for 1,146 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 1,365 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen969 claims
- Atorvastatin Calcium842 claims
- Levothyroxine Sodium773 claims
- Amlodipine Besylate706 claims
- Losartan Potassium629 claims
- Omeprazole470 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: $17.44
1 payment: education; the largest payer was Pfizer 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
- Sutter Valley Medical FoundationModesto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marek Tadeusz Skowron among 17,696 internal medicine physician records in California
Marek Tadeusz Skowron, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1985 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
129 internal medicine physician records list a practice address in Modesto
They are 129 of the 9,262 NPPES records with a practice address in Modesto, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Modesto → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Edward Auen, PH.D., M.D.Modesto, CA 953551962464602
- Veronica David, MDModesto, CA 953551427014877
- Gervacio Diaz, M.D.Modesto, CA 953551700835451
- Neal Dunitz, M.D.Modesto, CA 953551245215870
- Maria Go, MDModesto, CA 953551922095132
- Richard Holihan, MDModesto, CA 953551730146184
- Kenneth Hua, MDModesto, CA 953551609824382
- Youhana Jacobs, MDModesto, CA 953551396793717
Common questions
What is Marek Tadeusz Skowron, M.D.'s NPI number?
Marek Tadeusz Skowron, M.D.'s National Provider Identifier (NPI) is 1770548646, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marek Tadeusz Skowron, M.D. located?
The NPPES record lists a practice address at 600 Coffee RD, Modesto, CA, 95355. Phone: (209) 524-1211. Providers update this record themselves, so call before visiting.
How can I verify Marek Tadeusz Skowron, M.D.'s license?
NPPES lists California license number A92738, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marek Tadeusz Skowron, M.D. prescribe under Medicare Part D?
In 2024, Marek Tadeusz Skowron, M.D. had 18,376 Medicare Part D claims for 1,146 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.