Christopher Song, M.D.
Internal Medicine Physician · Greenwich, CT
Christopher Song, M.D. is an internal medicine physician with a practice address in Greenwich, Connecticut, and NPI 1184868374, issued on May 1, 2009. Check the license (Connecticut 50910, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Christopher Song
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 50910 CT
Self-reported in NPPES; status is on the state search - Practice location
- 5 Perryridge RD, Greenwich, CT 06830
- Phone
- (203) 863-3409
- Enumerated
- May 1, 2009
- Record last updated
- Feb 13, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120820000082); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 5 Perryridge RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Christopher Song in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 50910Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
107 Medicare Part D claims for 53 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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
- Hospital Medicine Associates LLCNew London, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Song among 2,623 internal medicine physician records in Connecticut
Christopher Song, M.D. is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2009 · median 2004 among the 1,646 with a school on file
- Record last updated2013 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 internal medicine physician records list a practice address in Greenwich
They are 54 of the 1,184 NPPES records with a practice address in Greenwich, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Greenwich → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Anthony Alleva, MDGreenwich, CT 068301518938778
- Joseph Andrews, M.D.Greenwich, CT 068301740280411
- Allen Chodock, MDGreenwich, CT 068301811928138
- John Delvecchio, MDGreenwich, CT 068301619990868
- Stephen Jones, M.D.Greenwich, CT 068301174547038
- Ellika Mardh, M.D.Greenwich, CT 068301235150145
- Mohammad Reza Moienafshari, M.D.Greenwich, CT 068301154396893
- Marcelyn Molloy, MDGreenwich, CT 068301053301358
Common questions
What is Christopher Song, M.D.'s NPI number?
Christopher Song, M.D.'s National Provider Identifier (NPI) is 1184868374, issued on May 1, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Song, M.D. located?
The NPPES record lists a practice address at 5 Perryridge RD, Greenwich, CT, 06830. Phone: (203) 863-3409. Providers update this record themselves, so call before visiting.
How can I verify Christopher Song, M.D.'s license?
NPPES lists Connecticut license number 50910, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher Song, M.D. prescribe under Medicare Part D?
In 2024, Christopher Song, M.D. had 107 Medicare Part D claims for 53 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.