Christopher Ashby Grantham, M.D.
Critical Care Medicine (Internal Medicine) Physician · Bronx, NY
Christopher Ashby Grantham, M.D. is a critical care medicine (internal medicine) physician with a practice address in Bronx, New York, and NPI 1952484149, issued on Oct 23, 2006. Check the license (New York 170931-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Christopher Ashby Grantham
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 170931-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 183RD St. & 3RD Ave., Bronx, NY 10457
- Phone
- (718) 960-6188
- Enumerated
- Oct 23, 2006
- Record last updated
- Feb 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 0246913 NJ
- Medicare enrollment
- Enrolled (PECOS I20070307000282); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 486 in New York → Look up another NPI →
Verify Christopher Ashby Grantham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 170931-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
15 Medicare Part D claims, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $973.98
17 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 2,708 providers of this specialty with any payment received $2,958.68 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
- Lawrence Medical Associates PCBronxville, NY
- Sbh Physicians PCBronx, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Ashby Grantham among 486 critical care medicine (internal medicine) physician records in New York
Christopher Ashby Grantham, M.D. is one of 486 critical care medicine (internal medicine) physician records with a practice address in New York. 90% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 67% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated1987 · median 2006 among the 389 with a school on file
- Record last updated2011 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in New York
There are 486 critical care medicine (internal medicine) physician records in New York.
All 486 in New York → Every provider in Bronx → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Subhan Ata, MDBronx, NY 104571811558125
- Sathya Alekhya Bukkuri, MDBronx, NY 104571568967263
- Pranav Sharma, MDBronx, NY 104571477077725
- Donald Chalfin, MDBronx, NY 104611366479545
- Peter Dicpinigaitis, MDBronx, NY 104611194815993
- Perminder GulaniBronx, NY 104611407118375
- Gavin Harris, M.D.Bronx, NY 104611295176691
- Sumit Kapoor, MDBronx, NY 104611427322478
Common questions
What is Christopher Ashby Grantham, M.D.'s NPI number?
Christopher Ashby Grantham, M.D.'s National Provider Identifier (NPI) is 1952484149, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Ashby Grantham, M.D. located?
The NPPES record lists a practice address at 183RD St. & 3RD Ave., Bronx, NY, 10457. Phone: (718) 960-6188. Providers update this record themselves, so call before visiting.
How can I verify Christopher Ashby Grantham, M.D.'s license?
NPPES lists New York license number 170931-1, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher Ashby Grantham, M.D. prescribe under Medicare Part D?
In 2024, Christopher Ashby Grantham, M.D. had 15 Medicare Part D claims; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
What is Christopher Ashby Grantham, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.