Nancy H. Chasko, MD
Internal Medicine Physician · York, PA
Nancy H. Chasko, MD is an internal medicine physician with a practice address in York, Pennsylvania, and NPI 1801094073, issued on Jul 10, 2007. Check the license (Pennsylvania MD440612, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Nancy H. Chasko
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD440612 PA
Self-reported in NPPES; status is on the state search - Practice location
- 25 Monument RD, York, PA 17403
- Phone
- (717) 741-8003
- Enumerated
- Jul 10, 2007
- Record last updated
- Jun 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (717) 461-7404
- Medicaid ID
- 102501689 PA
- Medicare enrollment
- Enrolled (PECOS I20101130000518); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 25 Monument RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vanita Ahuja, M.D.Surgery Physician1578617395
- Courtney Ayres, PAMedical Physician Assistant1699926576
- Richard Baker, MDInternal Medicine Physician1922028596
- Amanda Beattie, MDSurgery Physician1861651341
- Thomas Beierschmitt, OTRLHand Occupational Therapist1720433923
- Anthony Bixler, RPHPharmacist1619228913
Verify Nancy H. Chasko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD440612Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,617 Medicare Part D claims for 518 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 131 claims were for opioids.
Most prescribed
- Atorvastatin Calcium492 claims
- Rosuvastatin Calcium321 claims
- Levothyroxine Sodium309 claims
- Amlodipine Besylate233 claims
- Losartan Potassium220 claims
- Gabapentin198 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.
Bills Medicare through one group practice
- Wellspan Medical GroupYork, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nancy H. Chasko among 7,300 internal medicine physician records in Pennsylvania
Nancy H. Chasko, MD is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 57% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2007 · median 2008 among the 4,208 with a school on file
- Record last updated2021 · 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 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
164 internal medicine physician records list a practice address in York
They are 164 of the 4,575 NPPES records with a practice address in York, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in York → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Cyrus Beekey, MDYork, PA 174031972539336
- Todd Butz, MDYork, PA 174031477589026
- Robert Fritz, DOYork, PA 174031003882135
- Benjamin Hoover, M.D.York, PA 174031346272416
- Mark Illfelder, DOYork, PA 174031568438869
- Thomas Kurland, DOYork, PA 174031679549901
- W Leedy, DOYork, PA 174031235105115
- Bonny Lightner, DOYork, PA 174031902872187
Common questions
What is Nancy H. Chasko, MD's NPI number?
Nancy H. Chasko, MD's National Provider Identifier (NPI) is 1801094073, issued on Jul 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Nancy H. Chasko, MD located?
The NPPES record lists a practice address at 25 Monument RD, York, PA, 17403. Phone: (717) 741-8003. Providers update this record themselves, so call before visiting.
How can I verify Nancy H. Chasko, MD's license?
NPPES lists Pennsylvania license number MD440612, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nancy H. Chasko, MD prescribe under Medicare Part D?
In 2024, Nancy H. Chasko, MD had 7,617 Medicare Part D claims for 518 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.