Christienne Coates, MD
NPI 1215937800 · Ophthalmology Physician · Greenwich, CT
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christienne Coates, MD is a Ophthalmology Physician provider in Greenwich, CT (NPI 1215937800).
Provider details
- NPI number
- 1215937800
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 043126 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
334 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 213 | $134 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 79 | $95 |
| Exam of Visual Field With Extended Testing92083 | 28 | $67 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 14 | $175 |
Typical Medicare-allowed amounts for these services range $67–$175 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 211 | 36 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 38 | 30 |
| Timolol Maleate | 28 | — |
| Lifitegrastbrand: Xiidra | 24 | — |
| Erythromycin Basebrand: Erythromycin | 14 | — |
| Bimatoprostbrand: Lumigan | 11 | — |
| Moxifloxacin Hclbrand: Moxifloxacin | 11 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-26
- Last updated
- 2018-11-14
Frequently asked questions
- What is Christienne Coates's NPI number?
- Christienne Coates's National Provider Identifier (NPI) is 1215937800, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christienne Coates's specialty?
- Christienne Coates is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Christienne Coates located?
- Christienne Coates's practice location on file with NPPES is 4 Dearfield Dr, Greenwich, CT 06831-5351.
- What is Christienne Coates's phone number?
- The practice phone number listed in the NPPES registry for Christienne Coates is (203) 819-3082.
- Does Christienne Coates accept Medicare?
- Christienne Coates is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christienne Coates's NPI active?
- Yes — Christienne Coates's NPI (1215937800) is active in the NPPES registry as of the last update on 2018-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.