Janice Fields, MD
NPI 1346223609 · Gastroenterology Physician · Farmington Hills, MI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Janice Fields, MD is a Gastroenterology Physician provider in Farmington Hills, MI (NPI 1346223609).
Provider details
- NPI number
- 1346223609
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301066213 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
466 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 79 | $50 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 67 | $90 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 57 | $255 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 53 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $127 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 171 | 68 |
| Famotidine | 161 | 60 |
| Pantoprazole Sodium | 106 | 35 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 46 | 44 |
| Lansoprazole | 44 | 12 |
| Linaclotidebrand: Linzess | 39 | 18 |
| Dicyclomine Hcl | 30 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,412 across 66 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-21
- Last updated
- 2010-08-06
Frequently asked questions
- What is Janice Fields's NPI number?
- Janice Fields's National Provider Identifier (NPI) is 1346223609, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janice Fields's specialty?
- Janice Fields is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Janice Fields located?
- Janice Fields's practice location on file with NPPES is 30055 Northwestern Hwy, Farmington Hills, MI 48334-3230.
- What is Janice Fields's phone number?
- The practice phone number listed in the NPPES registry for Janice Fields is (248) 985-5000.
- Does Janice Fields accept Medicare?
- Janice Fields is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Janice Fields's NPI active?
- Yes — Janice Fields's NPI (1346223609) is active in the NPPES registry as of the last update on 2010-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.