Active NPI 1508992934 Individual Practitioner Male Practitioner

Dr. Perry G. An , MD

Internal Medicine • Newton, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Perry An, MD is a certified Internal Medicine practicing in Newton, MA. With approximately 21 years of clinical experience since graduating from New York University School Of Medicine in 2005, Dr. An delivers high-quality medical care to the local community at 2014 WASHINGTON STREET.

Dr. An is affiliated with Mass General Brigham Medical Group Suburban Massachusetts Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include hospital discharge day management, more than, initial hospital care with moderate level of medical decision making, if using time, at least, 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

2014 Washington Street
Nwh, 2nd Floor, Hospitalist Office

Newton, MA 02462

Telephone 6172436433

Fax 6172435148

Associated Practice Facility / Clinic

🏢 Mass General Brigham Medical Group Suburban Massachusetts Inc Facility NPI 1538191218

Medicare Profile & Education

Medical School

New York University School Of Medicine

Graduation Year

2005

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Newton, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

21 Yrs -0.9 yrs vs City Avg

City Avg: 21.9 Yrs

State Avg: 29.3 Yrs

Regional Practice Density

85 Specialists

Practicing in Newton, MA (7127 Statewide)

Telehealth Adoption Rate

25.9% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

75.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. An (21 Years) 21 Yrs

Newton Specialty Average (21.9 Years) 21.9 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
99239 Hospital discharge day management, more than 30 minutes	137	135	$484.04	$120.76
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	110	110	$805.00	$180.68
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	100	74	$498.75	$123.94
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	84	68	$331.49	$82.38
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	29	29	$545.48	$136.18
99238 Hospital discharge day management, 30 minutes or less	18	18	$341.78	$85.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	178	127	$298.99	$84.09
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	155	110	$436.90	$126.47
99239 Hospital discharge day management, more than 30 minutes	153	153	$444.75	$122.68
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	54	54	$547.00	$138.21
99238 Hospital discharge day management, 30 minutes or less	49	49	$308.78	$86.69
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	43	43	$805.00	$184.34
99231 Follow-up hospital inpatient care per day, typically 15 minutes	31	14	$168.06	$52.60

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	240	151	$284.98	$76.13
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	157	115	$409.81	$109.84
99239 Hospital discharge day management, more than 30 minutes	108	107	$426.33	$113.29
99231 Follow-up hospital inpatient care per day, typically 15 minutes	94	29	$159.20	$41.38
99219 Hospital observation care, typically 50 minutes	66	66	$529.36	$141.63
99217 Hospital observation care on day of discharge	54	54	$288.69	$77.52
99238 Hospital discharge day management, 30 minutes or less	34	33	$289.12	$77.93
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	34	34	$795.59	$211.83
99225 Subsequent observation care, typically 25 minutes per day	20	16	$284.25	$75.95
99220 Hospital observation care, typically 70 minutes	18	18	$742.50	$190.99
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$536.65	$144.40

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	283	192	$291.14	$77.74
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	172	121	$419.35	$111.74
99217 Hospital observation care on day of discharge	130	130	$296.23	$78.88
99239 Hospital discharge day management, more than 30 minutes	128	125	$435.22	$116.18
99219 Hospital observation care, typically 50 minutes	82	80	$543.85	$145.12
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	51	51	$817.24	$216.68
99238 Hospital discharge day management, 30 minutes or less	45	45	$294.80	$78.88
99231 Follow-up hospital inpatient care per day, typically 15 minutes	43	12	$160.00	$41.46
99225 Subsequent observation care, typically 25 minutes per day	26	26	$293.50	$77.74
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	15	15	$548.87	$147.04
99220 Hospital observation care, typically 70 minutes	13	13	$753.00	$196.42

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	160	107	$292.65	$79.12
99217 Hospital observation care on day of discharge	153	149	$296.20	$79.88
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	132	71	$417.42	$113.95
99219 Hospital observation care, typically 50 minutes	67	67	$545.99	$147.97
99239 Hospital discharge day management, more than 30 minutes	63	61	$434.41	$118.12
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	43	43	$811.56	$221.23
99238 Hospital discharge day management, 30 minutes or less	41	41	$297.93	$79.33
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	27	$553.74	$150.46
99225 Subsequent observation care, typically 25 minutes per day	17	16	$294.12	$79.58
99220 Hospital observation care, typically 70 minutes	17	17	$745.24	$201.57

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99217 Hospital observation care on day of discharge	215	208	$291.51	$78.92
99219 Hospital observation care, typically 50 minutes	106	105	$538.11	$145.88
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	75	75	$801.16	$217.25
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	47	47	$541.38	$147.03
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	37	27	$285.65	$78.25
99239 Hospital discharge day management, more than 30 minutes	24	23	$428.17	$116.06
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	19	14	$412.05	$111.59
99238 Hospital discharge day management, 30 minutes or less	19	19	$292.16	$79.24
99220 Hospital observation care, typically 70 minutes	15	15	$735.00	$199.19
99225 Subsequent observation care, typically 25 minutes per day	13	13	$288.92	$78.51

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	94	58	$276.29	$78.46
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	83	51	$398.47	$112.37
99239 Hospital discharge day management, more than 30 minutes	42	42	$415.31	$117.13
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	29	29	$775.83	$218.78
99238 Hospital discharge day management, 30 minutes or less	28	27	$281.00	$79.51
99219 Hospital observation care, typically 50 minutes	19	19	$519.00	$147.01
99217 Hospital observation care on day of discharge	17	17	$281.53	$79.54
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	14	$523.00	$147.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	131	91	$270.92	$76.17
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	83	55	$390.84	$110.12
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	62	62	$757.31	$213.79
99238 Hospital discharge day management, 30 minutes or less	51	49	$275.24	$77.28
99239 Hospital discharge day management, more than 30 minutes	48	45	$408.81	$114.60
99217 Hospital observation care on day of discharge	31	31	$277.16	$77.60
99219 Hospital observation care, typically 50 minutes	27	27	$507.89	$143.59
99231 Follow-up hospital inpatient care per day, typically 15 minutes	17	13	$145.29	$41.28
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$511.18	$144.35

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MA L-224456

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.

Hospital & Practice Group Affiliations

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

14 Associated Practitioners

Dr. Arthur Kennedy , MD

Internal Medicine

NPI 1043223266

Doctor of Medicine (M.D.)

Dr. Michael Zacks , MD

Internal Medicine

NPI 1043289622

Doctor of Medicine (M.D.)

Dr. David Wachs , MD

Internal Medicine

NPI 1073571436

Doctor of Medicine (M.D.)

Dr. Jeffrey Rothschild , MD

Internal Medicine - Critical Care Medicine

NPI 1093773947

Doctor of Medicine (M.D.)

Dr. Lien Le , MD

Internal Medicine

NPI 1295939197

Doctor of Medicine (M.D.)

Dr. Christine Combs , MD

Hospitalist

NPI 1437374022

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 October 26, 2009

NPI status registered as active in NPPES database

📍

Updated Practice Location October 26, 2009

Registered at 2014 WASHINGTON STREET, NWH, 2ND FLOOR, HOSPITALIST OFFICE, NEWTON, MA 02462 (Tel: 6172436433)

📍

Updated Business Mailing Address October 26, 2009

Registered at 2014 WASHINGTON STREET, NWH, 2ND FLOOR, HOSPITALIST OFFICE, NEWTON, MA 02462 (Tel: 6172436433)

👤

Provider Name / Credentials Updated October 26, 2009

Recorded as PERRY AN, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 26, 2009

Internal Medicine (License #L-224456 in MA)

🟢

Initial NPI Registration & Enumeration February 27, 2007

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: 1508992934

Entity Type:

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

Enumeration Date: February 27, 2007

Last Update: October 26, 2009

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2014 Washington Street, Nwh, 2nd Floor, Hospitalist Office

Newton, MA 02462

Phone: 6172436433

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.