Robert Ira Sack, M.D.
Psychiatry Physician · Lancaster, PA
Robert Ira Sack, M.D. is a psychiatry physician with a practice address in Lancaster, Pennsylvania, and NPI 1124148721, issued on Mar 29, 2007. Check the license (Pennsylvania MD438306, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Robert Ira Sack
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD438306 PA
Self-reported in NPPES; status is on the state search - Practice location
- 410 N Prince St, Lancaster, PA 17603
- Phone
- (717) 560-7917
- Enumerated
- Mar 29, 2007
- Record last updated
- Jul 9, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (717) 560-6452
- Medicare enrollment
- Enrolled (PECOS I20160929001252); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,662 in Pennsylvania → Look up another NPI →
Also registered at 410 N Prince St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie Alexander, LPCProfessional Counselor1053332460
- Rushaan BarimaniMental Health Counselor1316358450
- Julie Beck, LPNLicensed Practical Nurse1386191351
- Alicia Beegle, LSWSocial Worker1245908250
- Kristen BenoitSocial Worker1518725696
- Mahua Bhattacharya, LAPCMental Health Counselor1669262218
Verify Robert Ira Sack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD438306Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average psychiatry physician in 2024
649 Medicare Part D claims for 48 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Clonazepam58 claims
- Trazodone Hcl50 claims
- Alprazolam30 claims
- Clozapine30 claims
- Sertraline Hcl28 claims
- Duloxetine Hcl27 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
- T.W. Ponessa And Associates Counseling Services, Inc.Lancaster, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Ira Sack among 2,662 psychiatry physician records in Pennsylvania
Robert Ira Sack, M.D. is one of 2,662 psychiatry physician records with a practice address in Pennsylvania. 72% 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 39% of them.
- NPI issued2007 · 39% of these records are older, 46% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated1982 · median 2003 among the 1,186 with a school on file
- Record last updated2016 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
53 psychiatry physician records list a practice address in Lancaster
They are 53 of the 5,378 NPPES records with a practice address in Lancaster, and 2,662 psychiatry physician records in Pennsylvania.
All 2,662 in Pennsylvania → Every provider in Lancaster → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Herbert Cooper, MDLancaster, PA 176031912918947
- Mary Davis, MDLancaster, PA 176031346261831
- Mohamed Elyan, M.D.Lancaster, PA 176031790884583
- Felicia Figueroa, M.D.Lancaster, PA 176031104138676
- Nathan Hoff, MDLancaster, PA 176031174104624
- Ajit John, MDLancaster, PA 176031720662679
- Simrit Kahlon, MS, PA-CLancaster, PA 176031013466341
- Vikas Mandadi, M.D.Lancaster, PA 176031346691771
Common questions
What is Robert Ira Sack, M.D.'s NPI number?
Robert Ira Sack, M.D.'s National Provider Identifier (NPI) is 1124148721, issued on Mar 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Robert Ira Sack, M.D. located?
The NPPES record lists a practice address at 410 N Prince St, Lancaster, PA, 17603. Phone: (717) 560-7917. Providers update this record themselves, so call before visiting.
How can I verify Robert Ira Sack, M.D.'s license?
NPPES lists Pennsylvania license number MD438306, 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 Robert Ira Sack, M.D. prescribe under Medicare Part D?
In 2024, Robert Ira Sack, M.D. had 649 Medicare Part D claims for 48 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.