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Edit this profileWhere to find John U. Zink, MD
- Walnut Creek location main office
2637 Shadelands Dr, Walnut Creek, CA 94598 - Walnut Creek location
365 Lennon Ln, #250, Walnut Creek, CA 94598
About Dr. Zink
John U. Zink, MD practices surgery in Walnut Creek, CA. John is a 2007 graduate of University of Southern California Keck School of Medicine. Medicare claims data shows John provided 423 services to 338 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes, and critical care, first 30-74 minutes. The provider's National Provider Identifier (NPI) is 1366628935.
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
- (925) 932-6330
- Email not available
Practice Locations
2637 SHADELANDS DR
Walnut Creek, CA 94598
365 Lennon Ln #250
Walnut Creek, CA 94598
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
423 services · 338 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Limited ultrasound scan behind abdominal cavity | Imaging | 76775 |
27 | More often than most peers in Surgery |
| Ultrasound scan of chest | Imaging | 76604 |
26 | As often as other peers in Surgery |
| Limited ultrasound scan of abdomen | Imaging | 76705 |
25 | More often than most peers in Surgery |
| Ultrasound of heart, follow-up | Treatment | 93308 |
26 | More 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 |
119 | More often than most peers in Surgery |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
83 | More than most peers in Surgery |
| Critical care, first 30-74 minutes | Office visit | 99291 |
75 | More often than most peers in Surgery |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
30 | As often as other peers in Surgery |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
12 | 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.
Other general surgeons at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
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.
More connections — 30 related providers in 4 groups
Other general surgeons in Walnut Creek 8
Same specialty, same city.
Trained at University of Southern California Keck School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2007 at University of Southern California Keck School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Limited ultrasound scan behind abdominal cavity 6
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Zink specialize in?
Dr. Zink is a general surgeon in Walnut Creek, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Surgery”.
NPI registry
Where is Dr. Zink located?
Dr. Zink is listed at 2637 Shadelands Dr, Walnut Creek, CA 94598. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Zink's phone number?
The number on file is (925) 932-6330. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Zink?
Dr. Zink's National Provider Identifier is 1366628935. 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 Dr. Zink go to medical school?
Dr. Zink attended University of Southern California Keck School of Medicine, graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Zink have?
Dr. Zink has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Zink do most often?
According to Medicare billing data, Dr. Zink performs imaging including limited ultrasound scan behind abdominal cavity and ultrasound scan of chest; provides treatments such as ultrasound of heart, follow-up, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Zink's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Zink. If this is you, claiming it is free.
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