Physician Profile
Unclaimed ProfileAbout FIELDS
Warren Lewis Fields, M.D. is a healthcare provider in Mystic, CT specialising in internal medicine. Warren trained at University of Connecticut School of Medicine, graduating in 1991.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What kind of doctor is Dr. Fields?
Dr. Fields is an internal medicine in Mystic, CT. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Fields's address?
Dr. Fields is listed at 200 SANDY HOLLOW RD, Mystic, CT 06355. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Fields?
The number on file is (860) 572-8911. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Fields?
Dr. Fields's National Provider Identifier is 1821083999. 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. Fields train?
Dr. Fields attended University of Connecticut School of Medicine, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Fields have?
Dr. Fields has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Fields perform?
According to Medicare billing data, Dr. Fields provides treatments such as sarscv2 vac 30mcg trs-suc im and admn sarscov2 vacc 1 dose, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Fields's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Fields. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (860) 572-8911
- Email not available
Practice Locations
200 SANDY HOLLOW RD
Mystic, CT 06355
Procedures Most Often Billed to Medicare
2,039 services · 1,338 patients · 18 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Sarscv2 vac 30mcg trs-suc im | Treatment | 91320 |
71 |
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
71 |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
68 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
29 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
14 |
| Influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage | Treatment | 90656 |
12 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
688 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
386 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
203 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
133 |
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 internal medicines at this location 5
Same specialty, same street address — most likely the same department or group.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other internal medicines in Mystic 4
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of Connecticut School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at University of Connecticut School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Sarscv2 vac 30mcg trs-suc im 8
Providers in CT who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.