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Martha W Feldmann , NP

Nurse Practitioner • Providence, RI

Active NPI 1922096981 Individual Practitioner Female Practitioner
Practice location in NPPES

50 Maude St
Providence, RI 029084325

Call 4014566510 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

50 Maude St

Providence, RI 029084325

Telephone 4014566510
Fax 4014566546
Organization at the Same NPPES Address or Phone
Roger Williams Medical Center Facility NPI 1114961729

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Medicare-allowed amount

About $2,337 in 2021

The total amount Medicare approved for these services in 2021. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021.

Paid by Medicare

About $1,873 in 2021

The part of the Medicare-allowed amount that Medicare itself paid in 2021, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021.

30-day fills

11 standardized 30-day fills in 2020

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$136 in 2020

The total cost of these prescriptions in 2020, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020.

Open Payments general payments, program year 2021

All general payments: $33.08 across 2 records.

By nature of payment

  • Food and Beverage: $33.08 across 2 records.

Reporting-company totals

  • AbbVie Inc.: $33.08 across 2 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2021 (published June 30, 2026).

Guide: How to read an Open Payments record

NPI first issued

2005

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Providence and Rhode Island

Billing and prescribing volume is not a quality rating.

Medicare Part B

Comparisons use 2024 data. The latest CMS data for Martha Feldmann are from 2021.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Martha Feldmann are from 2020.

173 active clinicians are listed under Nurse Practitioner with a practice address in Providence, RI (391 in Rhode Island).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Providence

16.2% of these 173 clinicians have the CMS telehealth indicator.

55.5% of these 173 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2020), CMS Open Payments (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2021

Program year 2021 (payments made January 1 – December 31, 2021): fewer than 11 records totaling $33.08.

Manufacturer Payment Nature Product Type Amount ($)
AbbVie Inc.
Food and Beverage
In-kind items and services
HUMIRA General $18.93
AbbVie Inc.
Food and Beverage
In-kind items and services
HUMIRA General $14.15

Source: CMS Open Payments, program year 2021, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2021.

CMS Part B · Data Year 2021
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2020 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2021; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
37 29 $150.00 $63.15

Source: CMS Part B by Provider and Service, 2021; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2020.

CMS Part D · Data Year 2020
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Ibuprofen Ibuprofen 11 330 $136.14 —

Source: CMS Part D by Provider and Drug, 2020; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

License # reported to NPPES RI NPP28229

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Rhode Island State Medical Licensing Board.
Look Up on State Board Site

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

6 listed
Brenda Camilo , ACNPC-AG

Nurse Practitioner - Adult Health

NPI 1568196202

ACNPCAG

Dr. Alexander Harmatz , MD

Internal Medicine - Gastroenterology

NPI 1730142696

Doctor of Medicine (M.D.)

Rachael Kazarian , FNP

Nurse Practitioner - Family

NPI 1538753595

Family Nurse Practitioner

NPI 1063073146

Doctor of Medicine (M.D.), MHA

Dr. Nabil Toubia , MD

Internal Medicine - Gastroenterology

NPI 1922065200

Doctor of Medicine (M.D.)

Dr. Joseph Tucci , MD

Internal Medicine - Endocrinology, Diabetes & Metabolism

NPI 1780641084

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated October 12, 2005.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1922096981
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 12, 2005
Last Update: September 18, 2007
Sole Proprietor: No

Other Nurse Practitioners in Providence

All Nurse Practitioners in Providence

Mailing Address

50 Maude St

Providence, RI 029084325

Phone: 4014565368

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.