Phebe Sill Ko
Anesthesiology Physician · Boston, MA
Phebe Sill Ko is an anesthesiology physician with a practice address in Boston, Massachusetts, and NPI 1356583389, issued on Apr 6, 2009. Check the license (Massachusetts 258331, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Phebe Sill Ko
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 258331 MA
Self-reported in NPPES; status is on the state search - Practice location
- 75 Francis St, Boston, MA 02115
- Phone
- (617) 732-8210
- Enumerated
- Apr 6, 2009
- Record last updated
- Jul 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151007002777); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 2,089 in Massachusetts → Look up another NPI →
Also registered at 75 Francis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christine Abbott, NPAdult Health Nurse Practitioner1851471940
- Muhammad Abd-El-Barr, M.D., PH.D.Neurological Surgery Physician1891922688
- Duaa AbdelhameidStudent in an Organized Health Care Education/Training Program1851852867
Verify Phebe Sill Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 258331Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $27.71
1 payment: food and beverage; the largest payer was Cook Medical LLC. The 17,774 providers of this specialty with any payment received $669.59 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
- Anesthesia Care Associates Medical Group, IncNovato, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Phebe Sill Ko among 2,089 anesthesiology physician records in Massachusetts
Phebe Sill Ko is one of 2,089 anesthesiology physician records with a practice address in Massachusetts. 73% 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 54% of them.
- NPI issued2009 · 54% of these records are older, 43% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2010 · median 2008 among the 1,472 with a school on file
- Record last updated2014 · 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 207L00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,082 anesthesiology physician records list a practice address in Boston
They are 1,082 of the 41,865 NPPES records with a practice address in Boston, and 2,089 anesthesiology physician records in Massachusetts.
All 2,089 in Massachusetts → Every provider in Boston → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Roland Brusseau, MDBoston, MA 021151063402535
- William Camann, MDBoston, MA 021151902887979
- Michael Dambra, MDBoston, MA 021151477534386
- James Dinardo, M.D.Boston, MA 021151962496281
- Sunil Eappen, MDBoston, MA 021151770564684
- Omid Farokhzad, MDBoston, MA 021151548241433
- Gyorgy Frendl, MD PHDBoston, MA 021151366423261
- Khadija Khan, MDBoston, MA 021151144202573
Common questions
What is Phebe Sill Ko's NPI number?
Phebe Sill Ko's National Provider Identifier (NPI) is 1356583389, issued on Apr 6, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Phebe Sill Ko located?
The NPPES record lists a practice address at 75 Francis St, Boston, MA, 02115. Phone: (617) 732-8210. Providers update this record themselves, so call before visiting.
How can I verify Phebe Sill Ko's license?
NPPES lists Massachusetts license number 258331, 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.
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.