Marybeth Hayes, NP
NPI 1134856040 · Psychiatric/Mental Health Nurse Practitioner · Greenfield, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marybeth Hayes, NP is a Psychiatric/Mental Health Nurse Practitioner provider in Greenfield, MA (NPI 1134856040).
Provider details
- NPI number
- 1134856040
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- RN2282738 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
3 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
268 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 35 Minutes99232 | 182 | $66 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 33 | $99 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 29 | $96 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 24 | $110 |
Typical Medicare-allowed amounts for these services range $66–$110 (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
- 2022-08-02
- Last updated
- 2022-11-22
- Certified
- 2022-11-22
Frequently asked questions
- What is Marybeth Hayes's NPI number?
- Marybeth Hayes's National Provider Identifier (NPI) is 1134856040, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marybeth Hayes's specialty?
- Marybeth Hayes is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marybeth Hayes located?
- Marybeth Hayes's practice location on file with NPPES is 164 High St, Greenfield, MA 01301-2613.
- What is Marybeth Hayes's phone number?
- The practice phone number listed in the NPPES registry for Marybeth Hayes is (413) 773-2595.
- Does Marybeth Hayes accept Medicare?
- Marybeth Hayes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marybeth Hayes's NPI active?
- Yes — Marybeth Hayes's NPI (1134856040) is active in the NPPES registry as of the last update on 2022-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.