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Active NPI 1962493510 Individual Practitioner Male Practitioner

Dr. Keith Harold Baker , MD PHD

Anesthesiology • Boston, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Keith Baker, MD PHD is a certified Anesthesiology practicing in Boston, MA. With approximately 34 years of clinical experience since graduating from Washington University School Of Medicine in 1992, Dr. Baker delivers high-quality medical care to the local community at 55 FRUIT ST.

Dr. Baker is affiliated with Massachusetts General Physicians Organization Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include anesthesia for closed procedure in chest, anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope, insertion of artery tube for blood sampling or infusion through skin. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

55 Fruit St
Cln 3

Boston, MA 021142696

Telephone 6177263030
Fax 6177248500
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Washington University School Of Medicine

Graduation Year

1992

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in Boston, MA

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
34 Yrs +15.8 yrs vs City Avg
City Avg: 18.2 Yrs
State Avg: 27.4 Yrs
Regional Practice Density
1102 Specialists

Practicing in Boston, MA (2146 Statewide)

Telehealth Adoption Rate
1.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
86.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Baker (34 Years) 34 Yrs
Boston Specialty Average (18.2 Years) 18.2 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
00520 Anesthesia for closed procedure in chest
28 27 $2134.57 $293.54
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope
23 23 $1063.43 $124.00
36620 Insertion of artery tube for blood sampling or infusion through skin
22 22 $278.00 $44.87
00790 Anesthesia for procedure in upper abdomen including use of an endoscope
13 13 $2739.92 $374.17
00541 Anesthesia for procedure in chest with 1 lung ventilation
13 13 $4590.38 $635.66

Medical Specialties & State Licenses

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License MA 81303

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
3155242 (MA)
Commercial Insurance / Payer ID Bcbs Ma
J16735 (MA)
Commercial Insurance / Payer ID Tufts Health Plan
081303 (MA)

Hospital & Practice Group Affiliations

Massachusetts General Physicians Organization Inc

55 Fruit St, Boston, MA 021142696

Phone: 6177240287

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
NPI 1003103813

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

NPI 1003297516

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

Camie Doyle , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003313586

Certified Registered Nurse Anesthetist

Meha Aggarwal

Student in an Organized Health Care Education/Training Program

NPI 1003754169
Susan Maher , CRNA

Nurse Anesthetist, Certified Registered

NPI 1013076066

Certified Registered Nurse Anesthetist

Dr. Ashley Montgomery , MD

Student in an Organized Health Care Education/Training Program

NPI 1013856236

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 55 FRUIT ST, CLN 3, BOSTON, MA 021142696 (Tel: 6177263030)

📍
Updated Business Mailing Address July 08, 2007

Registered at PO BOX 9142, CHARLESTOWN, MA 021299142 (Tel: 6177240287)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as KEITH BAKER, MD PHD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Anesthesiology (License #81303 in MA)

🟢
Initial NPI Registration & Enumeration November 02, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1962493510
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: November 02, 2005
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

Po Box 9142

Charlestown, MA 021299142

Phone: 6177240287

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.