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Edit this profileAt a glance
- 349 E Coronado Rd, Phoenix, AZ 85004
About Dr. Mills
Michael R. Mills, M.D. practices gastroenterology in Phoenix, AZ. Michael is a 1991 graduate of Tulane University School of Medicine. Medicare claims data shows Michael provided 1,344 services to 1,191 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, removal of polyps or growths of large bowel using an endoscope with mechanical snare, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. The provider's National Provider Identifier (NPI) is 1811948359.
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
- (602) 266-5678
- Email not available
Practice Locations
349 E CORONADO RD
Phoenix, AZ 85004
Conditions Commonly Evaluated or Treated
Within Gastroenterology 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
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
Procedures Most Often Billed to Medicare
1,344 services · 1,191 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
137 | More often than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
104 | More often than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
85 | More often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
27 | More often than most peers in Gastroenterology |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | Procedure | 43248 |
20 | As often as other peers in Gastroenterology |
| Study of esophagus to assess movement | Treatment | 91010 |
78 | More than most peers in Gastroenterology |
| Monitoring and recording of esophageal function through nasal tube with electrode | Treatment | 91037 |
69 | More than most peers in Gastroenterology |
| Monitoring and recording of esophageal function through a capsule attached to the esophagus wall | Treatment | 91035 |
24 | More often than most peers in Gastroenterology |
| Monitoring and recording of esophageal function through nasal tube | Treatment | 91034 |
19 | More often than most peers in Gastroenterology |
| Prolonged monitoring and recording of esophageal function through nasal tube with electrode | Treatment | 91038 |
12 | Less often than most peers in Gastroenterology |
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 gastroenterologists at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
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 — 31 related providers in 4 groups
Other gastroenterologists in Phoenix 7
Same specialty, same city.
Trained at Tulane University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at Tulane University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 8
Providers in AZ who bill this service to Medicare most often.
Common questions
What does Michael R. Mills specialize in?
Michael R. Mills is a gastroenterologist in Phoenix, AZ. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Michael R. Mills located?
Michael R. Mills is listed at 349 E Coronado Rd, Phoenix, AZ 85004. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Michael R. Mills's phone number?
The number on file is (602) 266-5678. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Michael R. Mills?
Michael R. Mills's National Provider Identifier is 1811948359. 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 Michael R. Mills train?
Michael R. Mills attended Tulane University School of Medicine, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Michael R. Mills have?
Michael R. Mills has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What does Michael R. Mills do most often?
According to Medicare billing data, Michael R. Mills performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of large bowel using a flexible endoscope and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope; provides treatments such as study of esophagus to assess movement and monitoring and recording of esophageal function through nasal tube with electrode, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Michael R. Mills's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Michael R. Mills. If this is you, claiming it is free.
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