Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mary Helen Riddle, NP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1952814097

Mary Helen Riddle, NP is a Nurse Practitioner in Providence, Rhode Island. Qualified in 2016, 10 years ago. Practices with Affinity Physicians LLC, a 734-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Rhode Island.

Years since qualifying
10
Licensed in
RI
In the registry since
2017
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

1 Blackstone Street 2nd Fl
Providence, RI 02903-2759
Phone: (401) 453-7520
Fax: (401) 453-7529
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 10 Prospect St Ste 202, Nashua, NH 03060-3922 — (603) 886-7900
  • 101 Dudley St Fl 2, Providence, RI 02905-2401 — (401) 453-7520
  • 2 Dudley St Ste 560, Providence, RI 02905-3230 — (401) 453-7955

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence APRN02535 (RI)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence APRN04457 (RI)

Record details

NPI number1952814097
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedNovember 12, 2017
Last updated in NPPESMarch 27, 2025
Certification dateMarch 25, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Affinity Physicians Llc. — 734 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Providence