Mary Jayne McIlwain, M.D.
Anesthesiology Physician · Lancaster, PA
Mary Jayne McIlwain, M.D. is an anesthesiology physician with a practice address in Lancaster, Pennsylvania, and NPI 1811218548, issued on Jun 16, 2010. Check the license (Pennsylvania MD451688, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mary Jayne McIlwain
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- MD451688 PA
165309 NC
Self-reported in NPPES; status is on the state search - Practice location
- 133 E Frederick St, Lancaster, PA 17602
- Phone
- (717) 394-9821
- Enumerated
- Jun 16, 2010
- Record last updated
- Oct 22, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (717) 394-0175
- Medicare enrollment
- Enrolled (PECOS I20140722000170); accepts Medicare assignment
- Medical or professional school
- Emory University School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 2,481 in Pennsylvania → Look up another NPI →
Also registered at 133 E Frederick St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Salvatore Astarita, MDAnesthesiology Physician1073503280
- Michael Bell, D.O.Anesthesiology Physician1770796849
- Douglas Bower, M.D.Anesthesiology Physician1740402122
- Daniel Chess, MDAnesthesiology Physician1679568299
- Dominick D'Orazio, MDAnesthesiology Physician1316938368
- Craig Depoe, MDAnesthesiology Physician1821088998
Verify Mary Jayne McIlwain in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD451688Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $16.48
1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 17,774 providers of this specialty with any payment received $669.59 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.
One hospital affiliation
- Lancaster General HospitalLancaster, PA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mary Jayne McIlwain among 2,481 anesthesiology physician records in Pennsylvania
Mary Jayne McIlwain, M.D. is one of 2,481 anesthesiology physician records with a practice address in Pennsylvania. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.
- NPI issued2010 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2010 · median 2005 among the 1,720 with a school on file
- Record last updated2014 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
55 anesthesiology physician records list a practice address in Lancaster
They are 55 of the 5,378 NPPES records with a practice address in Lancaster, and 2,481 anesthesiology physician records in Pennsylvania.
All 2,481 in Pennsylvania → Every provider in Lancaster → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Salvatore Astarita, MDLancaster, PA 176021073503280
- Daniel Chess, MDLancaster, PA 176021679568299
- Craig Depoe, MDLancaster, PA 176021821088998
- Kirk Dise, MDLancaster, PA 176021184614257
- Christopher Elser, MDLancaster, PA 176021457341547
- Joseph Gibson, MDLancaster, PA 176021598755696
- Fernando Gutierrez, MDLancaster, PA 176021396735494
- Charles Lancelotta, MDLancaster, PA 176021831189943
Common questions
What is Mary Jayne McIlwain, M.D.'s NPI number?
Mary Jayne McIlwain, M.D.'s National Provider Identifier (NPI) is 1811218548, issued on Jun 16, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mary Jayne McIlwain, M.D. located?
The NPPES record lists a practice address at 133 E Frederick St, Lancaster, PA, 17602. Phone: (717) 394-9821. Providers update this record themselves, so call before visiting.
How can I verify Mary Jayne McIlwain, M.D.'s license?
NPPES lists Pennsylvania license number MD451688, 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.
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.