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Edit this profileAt a glance
- 1500 East Medical Center Dr, 2Nd Floor Taubman Ctr Recp F, Ann Arbor, MI 48109
About Dr. Sonnenday
Based in Ann Arbor, MI, Christopher Sonnenday, M.D. is listed in the NPI registry under surgery. Christopher graduated from Vanderbilt University School of Medicine in 1997. According to Medicare claims data, Christopher cared for 66 Medicare patients across 98 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes. NPI 1639103740 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (734) 936-5738
- Email not available
Practice Locations
1500 EAST MEDICAL CENTER DR 2ND FLOOR TAUBMAN CTR RECP F
Ann Arbor, MI 48109
Conditions Commonly Evaluated or Treated
Within Surgery (Unspecified) generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Breast conditions
Cancer
- Colon cancer
- Esophageal cancer
- Liver cancer
- Neuroendocrine Tumors
- Pancreatic cancer
- Soft-tissue sarcoma
- Stomach cancer
- Thyroid cancer
Colorectal
Digestive
- Abdominal adhesions
- Acid reflux
- Acute pancreatitis
- Bowel obstruction
- Colon polyps
- Diverticulitis
- Gastroparesis
- Peptic ulcer disease
Digestive & blood
Digestive health
- Crohn's disease
- Fecal incontinence
- Perforated bowel
- Severe chronic constipation
- Swallowing difficulties
- Ulcerative colitis
Endocrine
Infections
Lumps & bumps
Lymphatic
Minor surgery
Skin & scars
Skin & soft tissue
Skin cancer
Vascular
Weight & metabolism
Wound care
Wounds
Procedures & services
Endocrine
Vascular
Wounds
Most searched procedures
Abdominal
Abdominal surgery
Bariatric
Breast surgery
Cancer
Cancer surgery
Colorectal
- Anal fistula surgery
- Anal Sphincter Repair
- Colon resection
- Hemorrhoid removal
- Ostomy reversal
- Ostomy surgery
- Rectal prolapse repair
- Surgery for chronic anal fissure
Consultations
Diagnostic
Digestive
Digestive health
Infections
Minor surgery
Post-op care
Reconstruction
Skin & soft tissue
- Cyst Removal
- Lipoma removal
- Mole removal
- Pilonidal cyst surgery
- Scar revision surgery
- Skin Tag Removal
Skin cancer
Vascular & cancer
Weight loss
Wound care
Procedures Most Often Billed to Medicare
98 services · 66 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Preparation of donor kidney for transplantation | Procedure | 50323 |
11 | Less often than most peers in Surgery |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
52 | As often as other peers in Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
19 | Less often than most peers in Surgery |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
16 | Less often than most peers in Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other general surgeons in Ann Arbor 8
Same specialty, same city.
More connections — 21 related providers in 3 groups
Trained at Vanderbilt University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Vanderbilt University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Preparation of donor kidney for transplantation 5
Providers in MI who bill this service to Medicare most often.
Common questions
What does Christopher Sonnenday specialize in?
Christopher Sonnenday is a general surgeon in Ann Arbor, MI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Surgery”.
NPI registry
Where is Christopher Sonnenday located?
Christopher Sonnenday is listed at 1500 East Medical Center Dr 2Nd Floor Taubman Ctr Recp F, Ann Arbor, MI 48109. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Christopher Sonnenday's phone number?
The number on file is (734) 936-5738. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Christopher Sonnenday's NPI number?
Christopher Sonnenday's National Provider Identifier is 1639103740. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Christopher Sonnenday train?
Christopher Sonnenday attended Vanderbilt University School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Christopher Sonnenday been practicing?
Christopher Sonnenday has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Christopher Sonnenday do most often?
According to Medicare billing data, Christopher Sonnenday performs procedures including preparation of donor kidney for transplantation, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Christopher Sonnenday confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Christopher Sonnenday. If this is you, claiming it is free.
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