Active NPI 1255362505 Individual Practitioner Male Practitioner

Dr. Christopher Dennis , MD

Internal Medicine • Cambridge, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Christopher Dennis, MD is a certified Internal Medicine practicing in Cambridge, MA. With approximately 24 years of clinical experience since graduating from Medical College Of Georgia School Of Medicine in 2002, Dr. Dennis delivers high-quality medical care to the local community at 330 MOUNT AUBURN ST.

Dr. Dennis is affiliated with Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr 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, hospital discharge day management, more than, initial hospital care with moderate level of 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

330 Mount Auburn St
Hospitalist Services

Cambridge, MA 021385502

Telephone 6174995112

Fax 6175758608

Associated Practice Facility / Clinic

🏢 Mount Auburn Hospital Facility NPI 1689670259

Medicare Profile & Education

Medical School

Medical College Of Georgia School Of Medicine

Graduation Year

2002

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Cambridge, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

24 Yrs +1.4 yrs vs City Avg

City Avg: 22.6 Yrs

State Avg: 29.3 Yrs

Regional Practice Density

309 Specialists

Practicing in Cambridge, MA (7127 Statewide)

Telehealth Adoption Rate

23.9% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

67.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Dennis (24 Years) 24 Yrs

Cambridge Specialty Average (22.6 Years) 22.6 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	597	250	$368.57	$123.53
99239 Hospital discharge day management, more than 30 minutes	140	132	$356.36	$120.56
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	84	38	$248.46	$82.34
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	66	66	$586.79	$181.23

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	619	232	$239.07	$124.57
99239 Hospital discharge day management, more than 30 minutes	135	122	$232.93	$122.69
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	73	25	$182.12	$77.35
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	69	67	$453.80	$184.34

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	616	216	$205.00	$108.80
99239 Hospital discharge day management, more than 30 minutes	124	114	$211.00	$113.76
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	85	15	$142.00	$64.45
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	39	37	$393.72	$212.40
99226 Subsequent observation care, typically 35 minutes per day	24	22	$207.00	$108.13
99220 Hospital observation care, typically 70 minutes	23	23	$366.00	$191.33

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	540	204	$205.00	$111.74
99239 Hospital discharge day management, more than 30 minutes	144	131	$211.00	$116.18
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	43	19	$142.00	$77.74
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	33	33	$398.00	$210.35
99226 Subsequent observation care, typically 35 minutes per day	28	26	$207.00	$111.74
99217 Hospital observation care on day of discharge	25	25	$143.00	$78.88
99220 Hospital observation care, typically 70 minutes	20	20	$366.00	$196.42

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	526	217	$205.00	$113.94
99239 Hospital discharge day management, more than 30 minutes	152	139	$211.00	$117.91
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	41	30	$142.00	$79.16
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	41	40	$398.00	$221.60
99220 Hospital observation care, typically 70 minutes	19	19	$366.00	$195.04
99226 Subsequent observation care, typically 35 minutes per day	17	14	$207.00	$114.09
99217 Hospital observation care on day of discharge	14	14	$143.00	$79.95

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	537	201	$205.00	$111.58
99239 Hospital discharge day management, more than 30 minutes	113	105	$211.00	$115.94
99226 Subsequent observation care, typically 35 minutes per day	56	34	$207.00	$112.50
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	54	53	$398.00	$217.32
99217 Hospital observation care on day of discharge	28	28	$143.00	$79.20
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	26	22	$142.00	$78.10
99220 Hospital observation care, typically 70 minutes	19	19	$366.00	$199.34

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	370	142	$201.31	$110.09
99239 Hospital discharge day management, more than 30 minutes	94	82	$208.51	$114.76
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	36	34	$382.67	$214.45
99226 Subsequent observation care, typically 35 minutes per day	34	27	$198.47	$110.89
99220 Hospital observation care, typically 70 minutes	20	20	$366.00	$196.76
99217 Hospital observation care on day of discharge	19	19	$143.00	$77.86

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	193	75	$184.00	$107.84
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	93	88	$306.00	$209.57
99220 Hospital observation care, typically 70 minutes	46	46	$366.00	$192.18
99226 Subsequent observation care, typically 35 minutes per day	31	17	$149.00	$108.76
99239 Hospital discharge day management, more than 30 minutes	29	28	$185.00	$112.22
99217 Hospital observation care on day of discharge	11	11	$134.00	$75.97

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MA 229005

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

2120666 (MA)

Commercial Insurance / Payer ID Blue Shield

J40894 (MA)

Hospital & Practice Group Affiliations

Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc

330 Brookline Ave, Boston, MA 022155400

Phone: 6177548612

Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc

330 Mount Auburn St, Cambridge, MA 021385502

Phone: 7819839088

Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc

330 Brookline Ave, Boston, MA 022155400

Practice Associates & Co-Workers

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

20 Associated Practitioners

Dr. Auddri Rahman , MD

Internal Medicine

NPI 1043798499

Doctor of Medicine (M.D.)

Eric Flint

Internal Medicine

NPI 1083616395

Dr. Steven Master , MD

Internal Medicine

NPI 1255564837

Doctor of Medicine (M.D.)

Dr. Deirdre Woods , MD

Internal Medicine

NPI 1306848528

Doctor of Medicine (M.D.)

Dr. Frederic Celestin , MD

Internal Medicine

NPI 1417173436

Doctor of Medicine (M.D.)

Dr. Janine Mccauley , MD

Internal Medicine

NPI 1487656617

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 March 17, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location March 17, 2010

Registered at 330 MOUNT AUBURN ST, HOSPITALIST SERVICES, CAMBRIDGE, MA 021385502 (Tel: 6174995112)

📍

Updated Business Mailing Address March 17, 2010

Registered at 330 MOUNT AUBURN ST, HOSPITALIST SERVICES, CAMBRIDGE, MA 021385502 (Tel: 6174995112)

👤

Provider Name / Credentials Updated March 17, 2010

Recorded as CHRISTOPHER DENNIS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 17, 2010

Internal Medicine (License #229005 in MA)

🟢

Initial NPI Registration & Enumeration July 05, 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: 1255362505

Entity Type:

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

Enumeration Date: July 05, 2006

Last Update: March 17, 2010

Sole Proprietor: No

Update or Correct Profile

Mailing Address

330 Mount Auburn St, Hospitalist Services

Cambridge, MA 021385502

Phone: 6174995112

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.