Mary Byrne, PH.D.
NPI 1821120346 · Clinical Psychologist · Eastchester, NY
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Byrne, PH.D. is a Clinical Psychologist provider in Eastchester, NY (NPI 1821120346).
Provider details
- NPI number
- 1821120346
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 7728-1 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
458 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) |
|---|---|---|
| Psychotherapy, 45 Minutes90834 | 458 | $112 |
Typical Medicare-allowed amounts for these services range $112–$112 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-10
- Last updated
- 2024-08-31
- Certified
- 2024-08-29
Frequently asked questions
- What is Mary Byrne's NPI number?
- Mary Byrne's National Provider Identifier (NPI) is 1821120346, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Byrne's specialty?
- Mary Byrne is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mary Byrne located?
- Mary Byrne's practice location on file with NPPES is 479 White Plains Rd, Eastchester, NY 10709-5516.
- What is Mary Byrne's phone number?
- The practice phone number listed in the NPPES registry for Mary Byrne is (914) 793-7633.
- Does Mary Byrne accept Medicare?
- Mary Byrne is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Byrne's NPI active?
- Yes — Mary Byrne's NPI (1821120346) is active in the NPPES registry as of the last update on 2024-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.