Chen Bao, MD
Internal Medicine Physician · Boston, MA
Chen Bao, MD is an internal medicine physician with a practice address in Boston, Massachusetts, and NPI 1568083335, issued on May 2, 2020. Check the license (Massachusetts 285162, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Chen Bao
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 285162 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (314) 779-4296
- Enumerated
- May 2, 2020
- Record last updated
- Jun 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Chen Bao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 285162Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
156 Medicare Part D claims for 29 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Metoprolol Succinate32 claims
- Atorvastatin Calcium14 claims
- Furosemide11 claims
- Torsemide11 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.
Chen Bao among 6,825 internal medicine physician records in Massachusetts
Chen Bao, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 87% of them.
- NPI issued2020 · 87% of these records are older, 11% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2020 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,320 internal medicine physician records list a practice address in Boston
They are 2,320 of the 41,865 NPPES records with a practice address in Boston, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Boston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dineli Ahearn, M.D.Boston, MA 021111528015922
- Ethan Balk, M.D.Boston, MA 021111831136571
- Jeanine Carlson, M.D.Boston, MA 021111588603013
- Peter Castaldi, M.D.Boston, MA 021111902891062
- Daniel Chandler, M.D.Boston, MA 021111760440168
- Wambui Chege, M.D.Boston, MA 021111275571549
- Kevin Chin, MDBoston, MA 021111568430593
- Shira Doron, M.D.Boston, MA 021111831121359
Common questions
What is Chen Bao, MD's NPI number?
Chen Bao, MD's National Provider Identifier (NPI) is 1568083335, issued on May 2, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Chen Bao, MD located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (314) 779-4296. Providers update this record themselves, so call before visiting.
How can I verify Chen Bao, MD's license?
NPPES lists Massachusetts license number 285162, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chen Bao, MD prescribe under Medicare Part D?
In 2024, Chen Bao, MD had 156 Medicare Part D claims for 29 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.