Christina Grassi
Specialist · Mount Sinai, NY
Christina Grassi is a specialist with a practice address in Mount Sinai, New York, and NPI 1649452889, issued on Nov 29, 2007. Check the license (New York 304655, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christina Grassi
- Primary taxonomy
- Specialist 174400000X
- License number
- 304655 NY
Self-reported in NPPES; status is on the state search - Practice location
- 701 Route 25A, Mount Sinai, NY 11766
- Phone
- (631) 331-4403
- Enumerated
- Nov 29, 2007
- Record last updated
- Nov 29, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080709000601); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest specialist records → All 22,636 in New York → Look up another NPI →
Also registered at 701 Route 25A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Chu, M.D.Nephrology Physician1992943476
- Michell Davi, MS, RN, CPNPPediatric Nurse Practitioner1801120118
- Navpreet Dhuga, DOFamily Medicine Physician1003438144
- Alissa Gnolfo, PNPPediatric Nurse Practitioner1336582600
- Robert HludzinskiDentist1225238967
- David Kahn, D.M.D.General Practice Dentistry1134478753
Verify Christina Grassi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 304655Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average specialist in 2024
986 Medicare Part D claims for 93 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Sevelamer Carbonate100 claims
- Velphoro58 claims
- Clinolipid44 claims
- Nifedipine Er40 claims
- Alprazolam37 claims
- Eliquis30 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: $124.99
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 5,844 providers of this specialty with any payment received $4,760.79 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 one group practice
- Chs Physician Partners PCMount Sinai, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christina Grassi among 22,636 specialist records in New York
Christina Grassi is one of 22,636 specialist records with a practice address in New York. 6% 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 8% of them.
- NPI issued2007 · 8% of these records are older, 89% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 4% of these records are
- Graduated2007 · median 1990 among the 943 with a school on file
- Record last updated2007 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 specialist records list a practice address in Mount Sinai
They are 15 of the 219 NPPES records with a practice address in Mount Sinai, and 22,636 specialist records in New York.
All 22,636 in New York → Every provider in Mount Sinai → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Robyn BlumsteinMount Sinai, NY 117661417210816
- Christine BradleyMount Sinai, NY 117661225391253
- Nicole CortesMount Sinai, NY 117661447698295
- Danielle DigregorioMount Sinai, NY 117661700900768
- Merry Engel, B.S., M.A.Mount Sinai, NY 117661558416925
- Erica Gentile, MSEDMount Sinai, NY 117661568732964
- Patricia GriffinMount Sinai, NY 117661841779691
- Denise LaraqueMount Sinai, NY 117661770848442
Common questions
What is Christina Grassi's NPI number?
Christina Grassi's National Provider Identifier (NPI) is 1649452889, issued on Nov 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Christina Grassi located?
The NPPES record lists a practice address at 701 Route 25A, Mount Sinai, NY, 11766. Phone: (631) 331-4403. Providers update this record themselves, so call before visiting.
How can I verify Christina Grassi's license?
NPPES lists New York license number 304655, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Christina Grassi prescribe under Medicare Part D?
In 2024, Christina Grassi had 986 Medicare Part D claims for 93 beneficiaries; the average among specialist prescribers was 1,380. 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.