Active NPI 1639103740 Individual Practitioner Male Practitioner

Dr. Christopher Sonnenday , MD

Surgery • Ann Arbor, MI

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Christopher Sonnenday, MD is a certified Surgery practicing in Ann Arbor, MI. With approximately 29 years of clinical experience since graduating from Vanderbilt University School Of Medicine in 1997, Dr. Sonnenday delivers high-quality medical care to the local community at 1500 EAST MEDICAL CENTER DR.

Dr. Sonnenday is affiliated with Regents Of The University Of Michigan and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, established patient outpatient office visit, initial hospital care with straightforward or low-level 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

1500 East Medical Center Dr
2nd Floor Taubman Ctr Recp F

Ann Arbor, MI 481095332

Telephone 7349365738

Associated Practice Facility / Clinic

🏢 Regents Of The University Of Michigan Facility NPI 1770518953

Medicare Profile & Education

Medical School

Vanderbilt University School Of Medicine

Graduation Year

1997

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Ann Arbor, MI

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

29 Yrs +11.5 yrs vs City Avg

City Avg: 17.5 Yrs

State Avg: 25.8 Yrs

Regional Practice Density

92 Specialists

Practicing in Ann Arbor, MI (1479 Statewide)

Telehealth Adoption Rate

25.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

82.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Sonnenday (29 Years) 29 Yrs

Ann Arbor Specialty Average (17.5 Years) 17.5 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
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	52	26	$212.23	$78.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	19	14	$185.00	$97.43
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	16	15	$393.50	$132.13
50323 Preparation of donor kidney for transplantation	11	11	$1915.00	$166.61

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	128	36	$205.70	$80.53
99213 Established patient office or other outpatient visit, typically 15 minutes	39	30	$109.97	$67.14
99231 Follow-up hospital inpatient care per day, typically 15 minutes	26	14	$124.62	$49.74
99239 Hospital discharge day management, more than 30 minutes	20	19	$343.95	$112.35
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$375.12	$132.98
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	14	$134.69	$95.18
99238 Hospital discharge day management, 30 minutes or less	13	12	$219.69	$81.87
50360 Transplantation of donor kidney	12	12	$12997.00	$2441.99
50323 Preparation of donor kidney for transplantation	12	12	$1915.00	$152.73

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	50	34	$85.44	$68.92
99231 Follow-up hospital inpatient care per day, typically 15 minutes	34	14	$123.59	$39.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	17	14	$121.24	$100.66

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	36	27	$82.81	$70.15
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$231.18	$135.15
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	16	14	$50.00	$37.34
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	13	$120.00	$103.44

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	28	23	$49.68	$27.77
99213 Established patient office or other outpatient visit, typically 15 minutes	18	16	$81.44	$54.40

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	37	26	$70.62	$53.30
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	27	11	$186.93	$75.90
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	20	20	$312.00	$176.77
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	12	$107.63	$81.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	36	29	$57.00	$52.94
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	28	28	$281.46	$176.01
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	16	$164.59	$114.56
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	13	11	$93.00	$80.85

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	48	19	$178.50	$73.50
99213 Established patient office or other outpatient visit, typically 15 minutes	46	39	$57.00	$52.02
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	31	31	$267.00	$173.93
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	30	25	$158.00	$113.40

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License MI 4301088731

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

699801100 (MD)

Hospital & Practice Group Affiliations

Regents Of The University Of Michigan

1500 E Medical Ctr Dr 1st Fl Rec D, Ann Arbor, MI 481095000

Phone: 7347645175

Regents Of The University Of Michigan

1500 E Medical Ctr Dr B2 Floor R, Ann Arbor, MI 481090999

Phone: 7349366274

Regents Of The University Of Michigan

1500 E Medical Ctr Dr 1st Floor, Ann Arbor, MI 481090999

Regents Of The University Of Michigan

1500 E Medical Ctr Dr 2nd Lr, Ann Arbor, MI 481090999

Phone: 7347635459

Regents Of The University Of Michigan

1500 E Medical Ctr Dr, Ann Arbor, MI 481090999

Regents Of The University Of Michigan

1500 E Medical Ctr 2nd Floor Rec, Ann Arbor, MI 481090999

Phone: 7349365020

Regents Of The University Of Michigan

1500 E Medical Ctr Dr Level B, Ann Arbor, MI 481090999

Phone: 7346478901

Regents Of The University Of Michigan

1500 E Medical Ctr Dr 1st Fl, Ann Arbor, MI 481095000

Phone: 7349364185

Regents Of The University Of Michigan

1500 E Medical Ctr Dr 3rd Fl Taubma, Ann Arbor, MI 481095000

Phone: 7346477321

Regents Of The University Of Michigan

1500 E Medical Ctr Dr 1st Fl Rec F, Ann Arbor, MI 481095000

Phone: 7347645176

Regents Of The University Of Michigan

1500 E Medical Ctr Dr, Ann Arbor, MI 481095000

Regents Of The University Of Michigan

1500 E Medical Ctr, Ann Arbor, MI 481090999

Phone: 7349365738

Regents Of The University Of Michigan

1500 E Medical Ctr Dr 1st Flo, Ann Arbor, MI 481090999

Practice Associates & Co-Workers

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

40 Associated Practitioners

Aubrey Boucher , PA-C

Physician Assistant

NPI 1003230871

Physician Assistant (Certified)

Dr. Keerthi Burgi , MD

Student in an Organized Health Care Education/Training Program

NPI 1003758947

Doctor of Medicine (M.D.)

Izhar Mbarani

Student in an Organized Health Care Education/Training Program

NPI 1043957772

Dr. Rashmi Kumar , MD, PhD

Surgery

NPI 1043958762

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

Scott Levy

Surgery

NPI 1053055954

Dr. Phillip Hsu , MD, PhD

Student in an Organized Health Care Education/Training Program

NPI 1063090793

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 April 19, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location April 19, 2012

Registered at 1500 EAST MEDICAL CENTER DR, 2ND FLOOR TAUBMAN CTR RECP F, ANN ARBOR, MI 481095332 (Tel: 7349365738)

📍

Updated Business Mailing Address April 19, 2012

Registered at 3621 S STATE ST, 700 KMS PLACE, ANN ARBOR, MI 48108 (Tel: 7349362047)

👤

Provider Name / Credentials Updated April 19, 2012

Recorded as CHRISTOPHER SONNENDAY, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 19, 2012

Surgery (License #4301088731 in MI)

🟢

Initial NPI Registration & Enumeration July 11, 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: 1639103740

Entity Type:

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

Enumeration Date: July 11, 2006

Last Update: April 19, 2012

Sole Proprietor: No

Update or Correct Profile

Mailing Address

3621 S State St, 700 Kms Place

Ann Arbor, MI 48108

Phone: 7349362047

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.