NPPES file of Aug 9, 2026

Chandrasekharan Krishnan, M.D.

Glaucoma Specialist (Ophthalmology) Physician · Boston, MA

Chandrasekharan Krishnan, M.D. is a glaucoma specialist (ophthalmology) physician with a practice address in Boston, Massachusetts, and NPI 1548225139, issued on Apr 18, 2006. Check the license (Massachusetts 225169, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1548225139
Name
Chandrasekharan Krishnan
Credential
M.D.
Primary taxonomy
Glaucoma Specialist (Ophthalmology) Physician 207WX0009X
License number
225169 MA
Self-reported in NPPES; status is on the state search
Practice location
800 Washington St # 450, Boston, MA 02111
Phone
(617) 636-1183
Enumerated
Apr 18, 2006
Record last updated
Jun 27, 2017 (not updated in 9 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20050927000898); accepts Medicare assignment
Medical or professional school
Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 2000
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 800 Washington St # 450

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Aseef Ahmed, DOGlaucoma Specialist (Ophthalmology) Physician1649769233
  2. Alicia CasellaOphthalmology Physician1386347383
  3. Catherine Choi, M.D.Ophthalmology Physician1235428178
  4. Huan Mills, MDOphthalmology Physician1649633215
  5. Lisa Oconnell, RDOOptician1316717572
  6. A Karim Sleiman, MDOphthalmology Physician1457888604

Verify Chandrasekharan Krishnan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 225169
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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32% more Medicare Part D claims than the average glaucoma specialist (ophthalmology) physician in 2024

4,030 Medicare Part D claims for 757 beneficiaries, against an average of 3,060 among the 430 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.

  1. Chandrasekharan Krishnan4,030
  2. Specialty average3,060

Most prescribed

  1. Latanoprost1,170 claims
  2. Dorzolamide-Timolol651 claims
  3. Brimonidine Tartrate423 claims
  4. Timolol Maleate416 claims
  5. Prednisolone Acetate256 claims
  6. Dorzolamide Hcl151 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

  1. Pratt Ophthalmology Associates IncCambridge, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Chandrasekharan Krishnan among 13 glaucoma specialist (ophthalmology) physician records in Massachusetts

Chandrasekharan Krishnan, M.D. is one of 13 glaucoma specialist (ophthalmology) physician records with a practice address in Massachusetts. 85% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 54% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 85% of these records are
  • Graduated2000 · median 2008 among the 11 with a school on file
  • Record last updated2017 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0009X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Glaucoma Specialist (Ophthalmology) Physician providers in Massachusetts

There are 13 glaucoma specialist (ophthalmology) physician records in Massachusetts.

The 8 glaucoma specialist (ophthalmology) physician records with the nearest ZIP codes

  1. Aseef Ahmed, DOBoston, MA 021111649769233
  2. Deidrya Jackson, MD MPHBoston, MA 021111649658931
  3. Cynthia Mattox, M.D.Boston, MA 021111194780825
  4. Sarwat Salim, MDBoston, MA 021111114999471
  5. Michael Giovingo, M.D.Boston, MA 021141962668624
  6. Courtney Ondeck, M.D.Boston, MA 021141609213719
  7. Michelle Huynh, MDBoston, MA 021161003497686
  8. Michael Cooper, M.D.Burlington, MA 018051881786739

Common questions

What is Chandrasekharan Krishnan, M.D.'s NPI number?

Chandrasekharan Krishnan, M.D.'s National Provider Identifier (NPI) is 1548225139, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Chandrasekharan Krishnan, M.D. located?

The NPPES record lists a practice address at 800 Washington St # 450, Boston, MA, 02111. Phone: (617) 636-1183. Providers update this record themselves, so call before visiting.

How can I verify Chandrasekharan Krishnan, M.D.'s license?

NPPES lists Massachusetts license number 225169, 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 Chandrasekharan Krishnan, M.D. prescribe under Medicare Part D?

In 2024, Chandrasekharan Krishnan, M.D. had 4,030 Medicare Part D claims for 757 beneficiaries; the average among glaucoma specialist (ophthalmology) physician prescribers was 3,060. 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.