Shannon Mazur, D.O
NPI 1225491152 · Psychiatry Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shannon Mazur, D.O is a Psychiatry Physician provider in New Haven, CT (NPI 1225491152).
Provider details
- NPI number
- 1225491152
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O
- Sex
- Female
- Sole proprietor
- Yes
- License
- 267966 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
84 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 42 | $121 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 21 | $188 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 21 | $177 |
Typical Medicare-allowed amounts for these services range $121–$188 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Fluoxetine Hcl | 57 |
| Escitalopram Oxalate | 35 |
| Duloxetine Hcl | 24 |
| Gabapentin | 20 |
| Bupropion Hclbrand: Bupropion Xl | 16 |
| Methylphenidate Hcl | 16 |
| Risperidone | 16 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-03-29
- Last updated
- 2024-11-22
- Certified
- 2024-11-22
Frequently asked questions
- What is Shannon Mazur's NPI number?
- Shannon Mazur's National Provider Identifier (NPI) is 1225491152, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shannon Mazur's specialty?
- Shannon Mazur is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Shannon Mazur located?
- Shannon Mazur's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Shannon Mazur's phone number?
- The practice phone number listed in the NPPES registry for Shannon Mazur is (203) 688-4242.
- Does Shannon Mazur accept Medicare?
- Shannon Mazur is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shannon Mazur's NPI active?
- Yes — Shannon Mazur's NPI (1225491152) is active in the NPPES registry as of the last update on 2024-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.