Active NPI 1669635124 Individual Practitioner Male Practitioner

Dr. David Evan Leaf , MD, MMSC

Internal Medicine - Nephrology • Boston, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. David Leaf, MD, MMSC is a certified Internal Medicine - Nephrology practicing in Boston, MA. With approximately 18 years of clinical experience since graduating from New York University School Of Medicine in 2008, Dr. Leaf delivers high-quality medical care to the local community at 75 FRANCIS ST.

Dr. Leaf is affiliated with Brigham And Womens Physicians Organization Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, initial hospital care with moderate level of medical decision making, if using time, at least, telephone medical discussion with physician. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

75 Francis St

Boston, MA 021156110

Telephone 6177325500

Associated Practice Facility / Clinic

🏢 Brigham And Women's Hospital, Inc. Facility NPI 1972577799

Medicare Profile & Education

Medical School

New York University School Of Medicine

Graduation Year

2008

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine - Nephrology in Boston, MA

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

18 Yrs -6.6 yrs vs City Avg

City Avg: 24.6 Yrs

State Avg: 30.4 Yrs

Regional Practice Density

213 Specialists

Practicing in Boston, MA (433 Statewide)

Telehealth Adoption Rate

36.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

76.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Leaf (18 Years) 18 Yrs

Boston Specialty Average (24.6 Years) 24.6 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
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	312	73	$500.66	$123.82
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	32	32	$805.00	$181.17
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	28	26	$331.25	$81.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	227	53	$436.70	$126.45
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	26	20	$296.15	$84.08
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	23	23	$805.00	$179.00

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	464	79	$409.39	$109.91
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	37	37	$793.32	$212.17
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	18	18	$286.50	$76.35

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	248	62	$422.02	$110.84
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	34	34	$817.59	$216.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	222	67	$415.54	$115.52
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	33	33	$808.52	$224.31
99443 Telephone medical discussion with physician, 21-30 minutes	15	14	$315.00	$87.53

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	344	83	$411.51	$111.21
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	48	46	$800.50	$217.16
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	36	19	$285.17	$78.10
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	30	21	$310.67	$84.75
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	27	15	$440.22	$105.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	148	59	$404.15	$108.91
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	33	32	$785.18	$212.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	30	25	$302.50	$82.05
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	19	13	$432.95	$111.78
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	17	16	$277.59	$76.07

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	222	62	$390.22	$110.04
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	58	33	$270.62	$76.14
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	55	28	$294.75	$83.02
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	45	44	$758.78	$213.72

Medical Specialties & State Licenses

Internal Medicine - Nephrology Primary Specialty

NUCC Taxonomy Code: 207RN0300X

State License MA 253944

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Emergency Medicine - Emergency Medical Services

NUCC Taxonomy Code: 207PE0004X

State License MA 253944

An emergency medicine physician who specializes in non-hospital based emergency medical services (e.g., disaster site, accident scene, transport vehicle, etc.) to provide pre-hospital assessment, treatment, and transport patients.

Hospital & Practice Group Affiliations

Brigham And Womens Physicians Organization Inc

75 Francis St, Boston, MA 021156110

Phone: 6177325500

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. Chi Yuen Chan , MD

Student in an Organized Health Care Education/Training Program

NPI 1003104373

Doctor of Medicine (M.D.)

Cara Richards

Physician Assistant

NPI 1003163965

Dr. Jaimie Manlucu , MD

Student in an Organized Health Care Education/Training Program

NPI 1003194242

Doctor of Medicine (M.D.)

Dr. Joseph Taylor , MD, PhD

Psychiatry & Neurology - Psychiatry

NPI 1003203936

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

Dr. Vanessa Welten , MD MPH

Transplant Surgery

NPI 1003207762

MDMPH

Lara Coakley

Nurse Practitioner - Family

NPI 1003221136

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active June 06, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location June 06, 2014

Registered at 75 FRANCIS ST, BOSTON, MA 021156110 (Tel: 6177325500)

📍

Updated Business Mailing Address June 06, 2014

Registered at 75 FRANCIS ST, BOSTON, MA 021156110

👤

Provider Name / Credentials Updated June 06, 2014

Recorded as DAVID LEAF, M.D., M.M.S.C.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 06, 2014

Emergency Medicine (License #253944 in MA)

🟢

Initial NPI Registration & Enumeration July 05, 2008

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: 1669635124

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 05, 2008

Last Update: June 06, 2014

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

75 Francis St

Boston, MA 021156110

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.