Gregory Main Giuliano
Psychiatry Physician · Philadelphia, PA
Gregory Main Giuliano is a psychiatry physician with a practice address in Philadelphia, Pennsylvania, and NPI 1780003145, issued on Apr 14, 2014. Check the license (Pennsylvania OS018610, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Gregory Main Giuliano
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- OS018610 PA
Self-reported in NPPES; status is on the state search - Practice location
- 833 Chestnut St, Philadelphia, PA 19107
- Phone
- (215) 955-8420
- Enumerated
- Apr 14, 2014
- Record last updated
- Jun 4, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180607000202); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2014
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,662 in Pennsylvania → Look up another NPI →
Also registered at 833 Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christine Arenson, M.D.Family Medicine Physician1316970403
Verify Gregory Main Giuliano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS018610Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average psychiatry physician in 2024
317 Medicare Part D claims for 59 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Gabapentin21 claims
- Quetiapine Fumarate17 claims
- Oxcarbazepine15 claims
- Bupropion Xl12 claims
- Trazodone Hcl11 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
- Abington Memorial HospitalAbington, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Main Giuliano among 2,662 psychiatry physician records in Pennsylvania
Gregory Main Giuliano 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 2014, is newer than 72% of them.
- NPI issued2014 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2014 · median 2003 among the 1,186 with a school on file
- Record last updated2018 · 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).
727 psychiatry physician records list a practice address in Philadelphia
They are 727 of the 42,849 NPPES records with a practice address in Philadelphia, and 2,662 psychiatry physician records in Pennsylvania.
All 2,662 in Pennsylvania → Every provider in Philadelphia → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Herbert Adler, MDPhiladelphia, PA 191071356347389
- Salman AkhtarPhila, PA 191071548285091
- Ethel Campbell, MDPhiladelphia, PA 191071467552380
- Robert Dreyfus, M.D.Philadelphia, PA 191071689662363
- John Lauriello, MDPhiladelphia, PA 191071639185291
- Rajnish Mago, M.D.Phila, PA 191071770504821
- Robert McFadden, M.D.Philadelphia, PA 191071396753182
- Deanna Nobleza, MDPhiladelphia, PA 191071851499586
Common questions
What is Gregory Main Giuliano's NPI number?
Gregory Main Giuliano's National Provider Identifier (NPI) is 1780003145, issued on Apr 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Main Giuliano located?
The NPPES record lists a practice address at 833 Chestnut St, Philadelphia, PA, 19107. Phone: (215) 955-8420. Providers update this record themselves, so call before visiting.
How can I verify Gregory Main Giuliano's license?
NPPES lists Pennsylvania license number OS018610, 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 Gregory Main Giuliano prescribe under Medicare Part D?
In 2024, Gregory Main Giuliano had 317 Medicare Part D claims for 59 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.