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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. KATHERINE ROWAN MD
NPI 1205178969
Internal Medicine in West Islip, NY

Active since March 20, 2013PECOS Enrolled
631 MONTAUK HWY STE 1B, WEST ISLIP, NY 11795(631) 306-4607(631) 532-4924 Get Directions Write a Review

NPPES record last updated: September 30, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 30, 2026, Aug 21, 2026, Jul 28, 2026 and 2 more (5 updates tracked since 2022).

About Dr. Katherine Rowan Md NPPES

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

DR. KATHERINE ROWAN MD (NPI 1205178969) is an individual internal medicine provider in West Islip, New York, licensed in New York (278179) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS and maintains a secondary practice location in Huntington.

NPPES Registry Identity

NPI1205178969
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. KATHERINE ROWANCredential: MD
Location Address631 MONTAUK HWY STE 1BWest Islip, NY 11795-4400
Mailing Address71 Washington StBabylon, NY 11702-1817 · (860) 985-1279 · Fax (833) 455-9192
Phone(631) 306-4607
Fax(631) 532-4924
Sole ProprietorNo
Enumeration DateMarch 20, 2013
Last NPPES UpdateSeptember 30, 20265 updates tracked since enumeration
NPPES CertifiedSeptember 30, 2026
✔ NPI 1205178969 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 278179
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.
631 MONTAUK HWY STE 1B, West Islip, NY 11795
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Secondary Practice Location 1

Location 1221 E Main StHuntington, NY 11743-2924 · Phone (631) 306-4607 · Fax (833) 455-9192

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Katherine Rowan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

2

Medicare enrollment records show Katherine Rowan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

North Shore - Lij Medical PC
22 mi
Internal Medicine
270-05 76TH AVE
New Hyde Park, NY 11040
  • Reassigned Medicare billing, New York enrollment
  • 9,353 clinicians in this Medicare group
NPI 1790043479 (516) 465-8089
Doctor On Demand Professionals P C
2,609 mi
Family Medicine
1 CALIFORNIA ST STE 2300
San Francisco, CA 94111
  • Reassigned Medicare billing, New York enrollment
  • 12 clinicians in this Medicare group
NPI 1174931448 (800) 997-6196

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11795 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

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 Katherine Rowan's NPI number?

The NPI number for Katherine Rowan is 1205178969. It was assigned to this individual provider in the NPPES registry on March 20, 2013.

Where is Katherine Rowan located?

Katherine Rowan practices at 631 Montauk Hwy Ste 1B, West Islip, NY 11795. The listed phone number is (631) 306-4607.

What is Katherine Rowan's specialty?

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

Is Katherine Rowan enrolled in Medicare?

Yes. Katherine Rowan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Katherine Rowan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Rowan reassigns Medicare benefits to 2 organizations: North Shore - Lij Medical PC (New Hyde Park, NY) and Doctor On Demand Professionals P C (San Francisco, CA). 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 Katherine Rowan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Katherine Rowan was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 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.