Active NPI 1104895556 Individual Practitioner Male Practitioner

Dr. Walter Peter Mutter , MD

Internal Medicine - Nephrology • Newton, MA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Walter Mutter, MD is a certified Internal Medicine - Nephrology practicing in Newton, MA. With approximately 27 years of clinical experience since graduating from University Of Massachusetts Medical School in 1999, Dr. Mutter delivers high-quality medical care to the local community at NEWTON WELLESLEY PHYSICIANS NEPHROLOGY.

Dr. Mutter maintains professional affiliations with Massachusetts General Physicians Organization Inc, Mass General Brigham Medical Group Suburban Massachusetts Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's, subsequent hospital care with moderate levelof medical decision making, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

Newton Wellesley Physicians Nephrology
Newton Wellesley Hospital, Green 460

Newton, MA 20462

Telephone 6172435420

Medicare Profile & Education

Medical School

University Of Massachusetts Medical School

Graduation Year

1999

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine - Nephrology in Newton, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

27 Yrs -3.0 yrs vs City Avg

City Avg: 30.0 Yrs

State Avg: 30.4 Yrs

Regional Practice Density

5 Specialists

Practicing in Newton, MA (433 Statewide)

Telehealth Adoption Rate

40.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

75.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mutter (27 Years) 27 Yrs

Newton Specialty Average (30.0 Years) 30.0 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	599	408	$554.86	$138.88
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	549	430	$70.66	$17.34
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	296	120	$330.95	$82.23
99213 Established patient office or other outpatient visit, typically 15 minutes	224	199	$394.25	$98.82
90962 Dialysis services, 1 physician visit per month (20 years or older)	135	18	$861.22	$215.28
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	122	116	$545.56	$136.14
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	105	105	$776.00	$180.97
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	80	59	$778.11	$195.94
99443 Telephone medical discussion with physician, 21-30 minutes	71	58	$553.63	$139.43
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	37	25	$498.70	$124.04
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	23	22	$805.00	$176.92
90935 Hemodialysis procedure with physician evaluation	17	13	$299.71	$73.93
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	17	17	$512.53	$117.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	586	353	$544.37	$139.65
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	344	120	$303.02	$84.09
99213 Established patient office or other outpatient visit, typically 15 minutes	208	173	$386.18	$98.81
90962 Dialysis services, 1 physician visit per month (20 years or older)	200	24	$850.35	$217.59
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	168	142	$547.46	$138.24
90935 Hemodialysis procedure with physician evaluation	153	33	$296.07	$75.67
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	115	115	$776.00	$181.83
99443 Telephone medical discussion with physician, 21-30 minutes	45	41	$544.40	$139.66
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	25	15	$422.48	$123.65
99221 Initial hospital inpatient care per day, typically 30 minutes	24	24	$407.00	$88.12
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	21	21	$762.90	$195.79
99231 Follow-up hospital inpatient care per day, typically 15 minutes	15	14	$173.33	$52.59
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$509.17	$123.10

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	537	310	$533.24	$142.38
90962 Dialysis services, 1 physician visit per month (20 years or older)	229	28	$826.84	$223.65
99213 Established patient office or other outpatient visit, typically 15 minutes	165	145	$377.12	$101.64
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	156	78	$286.14	$76.22
90935 Hemodialysis procedure with physician evaluation	115	39	$290.64	$78.09
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	99	94	$540.09	$144.45
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	81	81	$729.46	$185.40
99443 Telephone medical discussion with physician, 21-30 minutes	69	55	$534.61	$142.95
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	49	31	$411.41	$109.61
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	24	23	$791.00	$212.85
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	21	20	$743.48	$200.44
99221 Initial hospital inpatient care per day, typically 30 minutes	18	18	$396.61	$107.57
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	13	13	$912.31	$227.79

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	446	250	$473.33	$145.75
90962 Dialysis services, 1 physician visit per month (20 years or older)	249	28	$778.25	$225.41
99213 Established patient office or other outpatient visit, typically 15 minutes	190	158	$329.21	$102.99
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	143	71	$289.55	$77.74
99443 Telephone medical discussion with physician, 21-30 minutes	124	95	$463.07	$146.04
90935 Hemodialysis procedure with physician evaluation	117	32	$296.84	$79.06
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	81	81	$553.30	$147.04
99221 Initial hospital inpatient care per day, typically 30 minutes	50	44	$410.44	$108.90
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	34	34	$689.18	$187.56
99442 Telephone medical discussion with physician, 11-20 minutes	27	27	$317.26	$103.29
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	22	17	$420.09	$111.74
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	17	$631.76	$202.68
99231 Follow-up hospital inpatient care per day, typically 15 minutes	15	13	$160.00	$41.46
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	13	13	$800.08	$216.68
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$451.69	$126.36

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
90962 Dialysis services, 1 physician visit per month (20 years or older)	325	38	$751.71	$207.88
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	280	109	$292.24	$79.96
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	275	205	$447.14	$123.24
99442 Telephone medical discussion with physician, 11-20 minutes	184	143	$306.84	$85.59
99441 Telephone medical discussion with physician, 5-10 minutes	179	146	$186.55	$52.46
90935 Hemodialysis procedure with physician evaluation	144	39	$293.07	$81.03
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	118	99	$549.37	$152.02
99213 Established patient office or other outpatient visit, typically 15 minutes	108	95	$308.70	$85.67
99221 Initial hospital inpatient care per day, typically 30 minutes	59	57	$409.24	$112.86
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	49	49	$666.63	$184.61
99443 Telephone medical discussion with physician, 21-30 minutes	47	41	$447.72	$123.76
99231 Follow-up hospital inpatient care per day, typically 15 minutes	41	32	$157.80	$43.38
90945 Dialysis procedure including 1 evaluation	39	11	$345.77	$96.67
90961 Dialysis services, 2-3 physician visits per month (20 years or older)	24	16	$963.00	$266.45
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	23	23	$447.35	$122.48
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	20	18	$189.50	$52.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	628	338	$436.14	$121.56
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	312	114	$287.98	$79.25
90962 Dialysis services, 1 physician visit per month (20 years or older)	295	41	$736.17	$203.77
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	167	134	$541.92	$149.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	113	113	$654.69	$182.83
90935 Hemodialysis procedure with physician evaluation	101	36	$286.12	$79.68
99213 Established patient office or other outpatient visit, typically 15 minutes	87	73	$298.29	$83.30
90961 Dialysis services, 2-3 physician visits per month (20 years or older)	55	29	$948.47	$262.57
99231 Follow-up hospital inpatient care per day, typically 15 minutes	29	19	$155.45	$42.86
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$437.31	$121.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	559	304	$426.85	$118.76
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	296	108	$279.41	$78.43
90962 Dialysis services, 1 physician visit per month (20 years or older)	174	40	$724.08	$200.55
90961 Dialysis services, 2-3 physician visits per month (20 years or older)	150	41	$930.88	$258.42
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	126	110	$527.70	$147.28
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	122	122	$647.75	$180.83
90935 Hemodialysis procedure with physician evaluation	73	30	$278.75	$78.01
99213 Established patient office or other outpatient visit, typically 15 minutes	53	42	$291.57	$80.82
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	20	16	$569.70	$159.72
99231 Follow-up hospital inpatient care per day, typically 15 minutes	17	13	$151.65	$42.17
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	16	11	$399.63	$112.27
99221 Initial hospital inpatient care per day, typically 30 minutes	15	13	$385.00	$109.14
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$426.08	$119.41

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	516	259	$416.40	$116.20
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	238	105	$272.55	$76.14
90961 Dialysis services, 2-3 physician visits per month (20 years or older)	143	25	$906.73	$253.01
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	125	125	$631.03	$176.54
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	96	93	$510.25	$144.12
90962 Dialysis services, 1 physician visit per month (20 years or older)	93	24	$703.65	$195.86
90935 Hemodialysis procedure with physician evaluation	57	31	$272.67	$75.79
99213 Established patient office or other outpatient visit, typically 15 minutes	44	40	$281.84	$79.53
99231 Follow-up hospital inpatient care per day, typically 15 minutes	39	30	$146.15	$41.28
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	24	16	$391.25	$110.04
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	24	19	$556.54	$156.44
99221 Initial hospital inpatient care per day, typically 30 minutes	23	22	$371.09	$106.56
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$415.77	$117.46
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	11	11	$794.09	$221.34

Medical Specialties & State Licenses

Internal Medicine - Nephrology Primary Specialty

NUCC Taxonomy Code: 207RN0300X

State License MA 210130

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.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

State License MA 210130

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

0167100 (MA)

Commercial Insurance / Payer ID Blue Cross Blue Sheild

J24722 (MA)

Commercial Insurance / Payer ID First Health

5594198 (MA)

Commercial Insurance / Payer ID Harvard Pilgrim Healthcar

693019 (MA)

Commercial Insurance / Payer ID Tufts Health Plan

210130 (MA)

Hospital & Practice Group Affiliations

Massachusetts General Physicians Organization Inc

55 Fruit St, Boston, MA 021142696

Phone: 6177240287

Mass General Brigham Medical Group Suburban Massachusetts Inc

195 Worcester St, Wellesley, MA 024815568

Phone: 6172191510

Mass General Brigham Medical Group Suburban Massachusetts Inc

2014 Washington St, Newton, MA 024621607

Phone: 6172436000

Practice Associates & Co-Workers

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

1 Associated Practitioners

Dr. Marta Christov , MD, PhD

Internal Medicine - Nephrology

NPI 1013163153

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

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active May 06, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location May 06, 2016

Registered at NEWTON WELLESLEY PHYSICIANS NEPHROLOGY, NEWTON WELLESLEY HOSPITAL, GREEN 460, NEWTON, MA 20462 (Tel: 6172435420)

📍

Updated Business Mailing Address May 06, 2016

Registered at NEWTON WELLESLEY HOSPITAL, GREEN 460, NEWTON WELLESLEY PHYSICIANS NEPHROLOGY, NEWTON, MA 20462 (Tel: 6172435420)

👤

Provider Name / Credentials Updated May 06, 2016

Recorded as WALTER MUTTER, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 06, 2016

Internal Medicine (License #210130 in MA)

🟢

Initial NPI Registration & Enumeration March 17, 2006

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: 1104895556

Entity Type:

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

Enumeration Date: March 17, 2006

Last Update: May 06, 2016

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Newton Wellesley Hospital, Green 460, Newton Wellesley Physicians Nephrology

Newton, MA 20462

Phone: 6172435420

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.