Mark Andrew Chylinski, MD
Internal Medicine Physician · California, MD
Mark Andrew Chylinski, MD is an internal medicine physician with a practice address in California, Maryland, and NPI 1710408539, issued on Jul 1, 2017. Check the license (Maryland D0091250, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mark Andrew Chylinski
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D0091250 MD
D91250 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22590 Shady CT, California, MD 20619
- Phone
- (301) 373-7900
- Enumerated
- Jul 1, 2017
- Record last updated
- May 16, 2022
- Fax
- (301) 373-6900
- Medicaid ID
- 578017900 MD
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 22590 Shady CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Naomi Constantine, PMHNPPsychiatric/Mental Health Nurse Practitioner1225212756
- Victoria Dube, CRNPFamily Nurse Practitioner1023607686
- Patricia Duswalt, CNMMidwife1104175819
- Christine Garrity, CRNPFamily Nurse Practitioner1821590878
- Archana Gupta, M.D.Family Medicine Physician1609894898
- Lindsay HillPrimary Care Nurse Practitioner1902563083
Verify Mark Andrew Chylinski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0091250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,652 Medicare Part D claims for 272 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium209 claims
- Amlodipine Besylate166 claims
- Lisinopril98 claims
- Levothyroxine Sodium83 claims
- Losartan Potassium82 claims
- Metformin Hcl71 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): 77.5 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: $228.53
12 payments; by number, the most common kind was food and beverage; the largest payer was Dynavax Technologies Corporation. 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.
Mark Andrew Chylinski among 3,904 internal medicine physician records in Maryland
Mark Andrew Chylinski, MD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2022 · 59% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 internal medicine physician records list a practice address in California
They are 7 of the 318 NPPES records with a practice address in California, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in California → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rita JhaveriCalifornia, MD 206191679508782
- Chandrasekhar Kothuru, MDCalifornia, MD 206191598287328
- Maunank Patel, M.DCalifornia, MD 206191164722591
- Michael Perraut, M.D.California, MD 206191013042209
- Michael SzkotnickiCalifornia, MD 206191700802899
- Donald Paulin Tchapmi Njeunje, MDCalifornia, MD 206191700458155
- Natasha Johnson, M.D.Charlotte Hall, MD 206221528384534
- Mary KramerCharlotte Hall, MD 206221821017757
Common questions
What is Mark Andrew Chylinski, MD's NPI number?
Mark Andrew Chylinski, MD's National Provider Identifier (NPI) is 1710408539, issued on Jul 1, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mark Andrew Chylinski, MD located?
The NPPES record lists a practice address at 22590 Shady CT, California, MD, 20619. Phone: (301) 373-7900. Providers update this record themselves, so call before visiting.
How can I verify Mark Andrew Chylinski, MD's license?
NPPES lists Maryland license number D0091250, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Andrew Chylinski, MD prescribe under Medicare Part D?
In 2024, Mark Andrew Chylinski, MD had 2,652 Medicare Part D claims for 272 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark Andrew Chylinski, MD's MIPS final score?
The 2023 MIPS final score is 77.5 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.