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MR. HERBERT J BRENNAN DO
NPI 1659489060
Internal Medicine in East Greenwich, RI

Active since August 26, 2006PECOS Enrolled
2358 SOUTH COUNTY TRAIL, EAST GREENWICH, RI 02818(401) 886-6000(401) 886-6002 Get Directions Write a Review

NPPES record last updated: September 10, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mr. Herbert J Brennan Do NPPES

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

MR. HERBERT J BRENNAN DO (NPI 1659489060) is an individual internal medicine provider in East Greenwich, Rhode Island, licensed in Rhode Island (D000445) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with South County Hospital Inc, and is a graduate of Chicago College Of Osteopathy (1992).

NPPES Registry Identity

NPI1659489060
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMR. HERBERT J BRENNANCredential: DO
Location Address2358 SOUTH COUNTY TRAILEast Greenwich, RI 02818
Mailing Address2358 South County TrailEast Greenwich, RI 02818 · (401) 886-6000 · Fax (401) 886-6002
Phone(401) 886-6000
Fax(401) 886-6002
Sole ProprietorNo
Medical School CMSChicago College Of OsteopathyGraduated 1992
Enumeration DateAugust 26, 2006
Last NPPES UpdateSeptember 10, 2008
✔ NPI 1659489060 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 · D000445
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.
2358 SOUTH COUNTY TRAIL, East Greenwich, RI 02818
Open in Google Maps ↗

Other Identifiers 5

Other0400679Uhc
Other401019RI · Blue Chip
Medicare UPING22668
Other0000025578RI · Blue Cross
Medicare PIN119020286RI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellSense Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Herbert J Brennan Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7214831908
PECOS Enrollment IDI20031124000631
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 Reassignment

Medicare enrollment records show Herbert Brennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Herbert J Brennan Do Ltd
Same address
Internal Medicine
2358 S COUNTY TRL
East Greenwich, RI 02818
  • Reassigned Medicare billing, Rhode Island enrollment
NPI 1184896722 (401) 886-6000

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 10

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.
191 services128 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.
152 services152 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
150 services150 patients
Stool analysis for blood to screen for colon tumors 82270
A stool analysis for blood is a non-invasive procedure used to check for the presence of hidden blood in your stool. This can be an early sign of colon tumors. The test involves collecting a small sample of stool at home and sending it to a lab for analysis.
95 services95 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
75 services38 patients
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211
This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.
37 services21 patients

Hospital Affiliations CMS Care Compare 4

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

South County Hospital Inc

Acute Care Hospitals · Wakefield, RI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number410008
Location100 Kenyon AveWakefield, RI 02879 · Washington County
Emergency services Birthing friendly

Kent County Memorial Hospital

Acute Care Hospitals · Warwick, RI
3/5 CMS rating
OwnershipProprietary
CMS Certification Number410009
Location455 Toll Gate RdWarwick, RI 02886 · Kent County
Emergency services Birthing friendly

Women & Infants Hospital Of Rhode Island

Acute Care Hospitals · Providence, RI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number410010
Location101 Dudley StreetProvidence, RI 02905 · Providence County
Emergency services Birthing friendly

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 02818 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 3

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
12 suppliers31 claims85 services$6.40 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
6 suppliers13 claims17 services$1.18 avg. paid by Medicare
Respiratory assist device, bi-level pressure capability, without backup rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0470
DME-Other DME · category DE001N
2 suppliers13 claims15 services$68.79 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

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

DR. CHARLES L CRONIN III DO
Internal Medicine
2358 SOUTH COUNTY TRAIL
EAST GREENWICH, RI 02818
Kent County (401) 886-6000

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 Herbert Brennan's NPI number?

The NPI number for Herbert Brennan is 1659489060. It was assigned to this individual provider in the NPPES registry on August 26, 2006.

Where is Herbert Brennan located?

Herbert Brennan practices at 2358 South County Trail, East Greenwich, RI 02818. The listed phone number is (401) 886-6000.

What is Herbert Brennan's specialty?

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

Is Herbert Brennan enrolled in Medicare?

Yes. Herbert Brennan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Herbert Brennan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Herbert Brennan reassigns Medicare benefits to Herbert J Brennan Do Ltd (East Greenwich, RI). The 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 Herbert Brennan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Herbert Brennan accept?

Health plans from WellSense Health Plan list Herbert Brennan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Herbert Brennan affiliated with any hospitals?

According to CMS data, Herbert Brennan is affiliated with South County Hospital Inc, Kent County Memorial Hospital, Women & Infants Hospital Of Rhode Island and The Miriam Hospital.

When was this NPI record last updated?

The NPPES record for Herbert Brennan was last updated on September 10, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.