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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GARTH OLIVER M.D.
NPI 1285673145
Internal Medicine in West Haven, CT

Active since June 06, 2006PECOS Enrolled
603 SAVIN AVE, WEST HAVEN, CT 06516(203) 932-2400(203) 932-2401 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Garth Oliver M.d. NPPES

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

DR. GARTH OLIVER M.D. (NPI 1285673145) is an individual internal medicine provider in West Haven, Connecticut, licensed in Connecticut (035510) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Columbia University College Of Physicians And Surgeons (1993).

NPPES Registry Identity

NPI1285673145
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. GARTH OLIVERCredential: M.D.
Location Address603 SAVIN AVEWest Haven, CT 06516-4933
Mailing Address603 Savin AveWest Haven, CT 06516-4933 · (203) 932-2400 · Fax (203) 932-2401
Phone(203) 932-2400
Fax(203) 932-2401
Sole ProprietorNo
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 1993
Enumeration DateJune 6, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1285673145 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 035510
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.
603 SAVIN AVE, West Haven, CT 06516
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Other Identifiers 5

Other010035510CT01CT · Anthem Bcbs
Other5817459CT · Aetna
Other2V4111CT · Healthnet
Other001355107-03CT · Blue Care Family Plan
OtherP449063CT · Oxford

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Garth Oliver 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 ID2860306495
PECOS Enrollment IDI20031118000048
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.

Areas of Expertise CMS Part B claims 6

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.
126 services56 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
57 services40 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
20 services20 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
20 services19 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.
16 services12 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.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06516 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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.

Other Providers at the Same Location NPPES 3

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

INSPIRED HEALING SERVICES, LLC
Counselor (Professional)
603 SAVIN AVE
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 350-3698
MARSHA SAINTILUS M.A.
Counselor (Professional)
603 SAVIN AVE
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 350-3698
MARTINE SAINTILUS LCSW
Social Worker (Clinical)
603 SAVIN AVE
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 350-3698

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 Garth Oliver's NPI number?

The NPI number for Garth Oliver is 1285673145. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is Garth Oliver located?

Garth Oliver practices at 603 Savin Ave, West Haven, CT 06516. The listed phone number is (203) 932-2400.

What is Garth Oliver's specialty?

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

Is Garth Oliver enrolled in Medicare?

Yes. Garth Oliver 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.

When was this NPI record last updated?

The NPPES record for Garth Oliver was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days 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.