Colby Shirk, M. D.
Emergency Medicine Physician · Chambersburg, PA
Colby Shirk, M. D. is an emergency medicine physician with a practice address in Chambersburg, Pennsylvania, and NPI 1912935271, issued on Jun 28, 2006. Check the license (Pennsylvania MD427340, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Colby Shirk
- Credential
- M. D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD427340 PA
Self-reported in NPPES; status is on the state search - Practice location
- 112 N 7TH St, Chambersburg, PA 17201
- Phone
- (717) 267-7146
- Enumerated
- Jun 28, 2006
- Record last updated
- Feb 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (717) 267-7728
- Medicaid ID
- 101648550 PA
- Medicare enrollment
- Enrolled (PECOS I20060728000009); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,911 in Pennsylvania → Look up another NPI →
Also registered at 112 N 7TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Colby Shirk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD427340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% more Medicare Part D claims than the average emergency medicine physician in 2024
438 Medicare Part D claims for 316 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 55 claims were for opioids.
Most prescribed
- Diclofenac Sodium77 claims
- Cephalexin53 claims
- Oxycodone Hcl44 claims
- Ondansetron Odt32 claims
- Prednisone21 claims
- Azithromycin20 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: $42.24
2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 12,335 providers of this specialty with any payment received $953.79 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 2 group practices
- The Chambersburg HospitalChambersburg, PA
- Waynesboro HospitalWaynesboro, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colby Shirk among 3,911 emergency medicine physician records in Pennsylvania
Colby Shirk, M. D. is one of 3,911 emergency medicine physician records with a practice address in Pennsylvania. 82% 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, 69% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2003 · median 2013 among the 2,231 with a school on file
- Record last updated2020 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 emergency medicine physician records list a practice address in Chambersburg
They are 27 of the 1,537 NPPES records with a practice address in Chambersburg, and 3,911 emergency medicine physician records in Pennsylvania.
All 3,911 in Pennsylvania → Every provider in Chambersburg → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Diane Batt, MDChambersburg, PA 172011285685552
- Lawrence Boyler, MDChambersburg, PA 172011861442246
- Jon Bush, MDChambersburg, PA 172011245294099
- Michael Coriale, MDChambersburg, PA 172011497705685
- Laura Crim, MDChambersburg, PA 172011730127267
- David Ebbitt, MDChambersburg, PA 172011609874858
- David Marx, MDChambersburg, PA 172011962453068
- Norbert Mathias, MDChambersburg, PA 172011871598987
Common questions
What is Colby Shirk, M. D.'s NPI number?
Colby Shirk, M. D.'s National Provider Identifier (NPI) is 1912935271, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Colby Shirk, M. D. located?
The NPPES record lists a practice address at 112 N 7TH St, Chambersburg, PA, 17201. Phone: (717) 267-7146. Providers update this record themselves, so call before visiting.
How can I verify Colby Shirk, M. D.'s license?
NPPES lists Pennsylvania license number MD427340, 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 Colby Shirk, M. D. prescribe under Medicare Part D?
In 2024, Colby Shirk, M. D. had 438 Medicare Part D claims for 316 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.