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JOHN MARK RYAN M.D.
NPI 1841230968
Internal Medicine in Providence, RI

Active since June 07, 2006PECOS EnrolledAccepts Medicare Assignment
245 CHAPMAN ST, PROVIDENCE, RI 02905(401) 444-4741(401) 444-4445 Get Directions Write a Review

NPPES record last updated: August 14, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 14, 2025, May 18, 2022, Sep 12, 2016 (3 updates tracked since 2016).

About John Mark Ryan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN MARK RYAN M.D. (NPI 1841230968) is an individual internal medicine provider in Providence, Rhode Island, licensed in Rhode Island (MD07097) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Rhode Island Hospital, and maintains a secondary practice location in Riverside.

NPPES Registry Identity

NPI1841230968
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJOHN MARK RYANCredential: M.D.
Location Address245 CHAPMAN STProvidence, RI 02905-4539
Mailing AddressDept 3010, Po Box 986524Boston, MA 02298-6524 · (401) 443-4992 · Fax (401) 537-7241
Phone(401) 444-4741
Fax(401) 444-4445
Sole ProprietorNo
Medical School CMSWarren Alpert Medical School Of Brown UniversityGraduated 1984
Enumeration DateJune 7, 2006
Last NPPES UpdateAugust 14, 20253 updates tracked since enumeration
NPPES CertifiedAugust 14, 2025
✔ NPI 1841230968 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in RI · MD07097
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
245 CHAPMAN ST, Providence, RI 02905
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Secondary Practice Location 1

Location 1375 Wampanoag Trl, Suite 201Riverside, RI 02915-2232 · Phone (401) 649-4020 · Fax (401) 649-4021

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John Mark Ryan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3173507746
PECOS Enrollment IDI20040614000707
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show John Ryan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Brown Medicine
1.2 mi
Gastroenterology
235 PLAIN ST STE 201
Providence, RI 02905
  • Reassigned Medicare billing, Rhode Island enrollment
  • 256 clinicians in this Medicare group
NPI 1730827767 (401) 861-8830
Rhode Island Hospital
1.4 mi
Multi-Specialty
593 EDDY ST
Providence, RI 02903
  • Reassigned Medicare billing, Rhode Island enrollment
  • 358 clinicians in this Medicare group
NPI 1154537520 (401) 444-6905
The Miriam Hospital
4.1 mi
Multi-Specialty
164 SUMMIT AVE
Providence, RI 02906
  • Reassigned Medicare billing, Rhode Island enrollment
  • 93 clinicians in this Medicare group
NPI 1598978744 (401) 444-5640

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
331 services206 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
166 services166 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
35 services33 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
27 services27 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
15 services15 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Rhode Island Hospital

Acute Care Hospitals · Providence, RI
3/5 CMS rating
OwnershipTribal
CMS Certification Number410007
Location593 Eddy StreetProvidence, RI 02903 · Providence County
Emergency services

The Miriam Hospital

Acute Care Hospitals · Providence, RI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number410012
Location164 Summit AvenueProvidence, RI 02906 · Providence County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02905 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.17 typical visit price
range $58.57 – $177.03
Typical copayment $33.54 (range $14.64 – $44.25)
Most-billed visit code 99204
Established Patient
$103.10 typical visit price
range $18.92 – $144.38
Typical copayment $25.77 (range $4.73 – $36.09)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
7 suppliers25 claims59 services$5.65 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
6 suppliers18 claims20 services$0.92 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DAWN M SIMOES NURSE PRACTITIONER
Nurse Practitioner (Family)
245 CHAPMAN ST, SUITE 300
PROVIDENCE, RI 02905
Providence County (401) 444-4741
DR. SARAH G ALBANESE PHARMD, BCGP
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
245 CHAPMAN ST
PROVIDENCE, RI 02905
Providence County (401) 444-3724
ERIKA NICOLE SGAMBATO LICSW
Social Worker (Clinical)
245 CHAPMAN ST, SUITE 300
PROVIDENCE, RI 02905
Providence County (401) 444-4000
NIHARIKA MEHTA MD
Internal Medicine
245 CHAPMAN ST
PROVIDENCE, RI 02905
Providence County (401) 649-4090
MRS. DAWN FERET RPH
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
245 CHAPMAN ST, SUITE 300 ATTN: PHARMACIST
PROVIDENCE, RI 02905
Providence County (401) 606-3829
UNIVERSITY FOOT & ANKLE CENTER INC
Podiatrist (Foot & Ankle Surgery)
245 CHAPMAN ST
PROVIDENCE, RI 02905
Providence County (401) 861-8830

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Ryan's NPI number?

The NPI number for John Ryan is 1841230968. It was assigned to this individual provider in the NPPES registry on June 7, 2006.

Where is John Ryan located?

John Ryan practices at 245 Chapman St, Providence, RI 02905. The listed phone number is (401) 444-4741.

What is John Ryan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is John Ryan enrolled in Medicare?

Yes. John Ryan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for John Ryan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Ryan reassigns Medicare benefits to 3 organizations: Brown Medicine (Providence, RI), Rhode Island Hospital (Providence, RI) and The Miriam Hospital (Providence, RI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Ryan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is John Ryan affiliated with any hospitals?

According to CMS data, John Ryan is affiliated with Rhode Island Hospital and The Miriam Hospital.

When was this NPI record last updated?

The NPPES record for John Ryan was last updated on August 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.