MS. SUSANNAH LYNN KERWIN ANP-BC
NPI 1609183342
Nurse Practitioner - Adult Health in Denver, CO

Q: What is Susannah Kerwin's NPI number?

The NPI number for Susannah Kerwin is 1609183342. It was assigned to this individual provider in the NPPES registry on September 1, 2010. The provider is also known as Susannah Williams.

Q: What is Susannah Kerwin's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Q: Is Susannah Kerwin enrolled in Medicare?

No. Susannah Kerwin has opted out of Medicare through October 1, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: When was this NPI record last updated?

The NPPES record for Susannah Kerwin was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since September 01, 2010Opted out of Medicare · through Oct 1, 2026

50 S STEELE ST STE 950, DENVER, CO 80209(347) 450-5892(347) 321-7589 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 7, 2026, Aug 19, 2022, Dec 31, 2020 (3 updates tracked since 2020).

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About Ms. Susannah Lynn Kerwin Anp-bc NPPES

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

MS. SUSANNAH LYNN KERWIN ANP-BC (NPI 1609183342) is an individual adult health provider in Denver, Colorado, licensed in New York (F305433-1) and active in the NPI registry since September 2010. She has opted out of Medicare through October 1, 2026 and remains eligible to order and refer and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1609183342

Entity TypeIndividualFemale

Primary Taxonomy363LA2200X

Provider Legal NameMS. SUSANNAH LYNN KERWINCredential: ANP-BC

Location Address50 S STEELE ST STE 950Denver, CO 80209-2843

Mailing Address50 S Steele St Ste 950Denver, CO 80209-2843 · (347) 450-5892 · Fax (347) 321-7589

Phone(347) 450-5892

Fax(347) 321-7589

Sole ProprietorYes

Enumeration DateSeptember 1, 2010

Last NPPES UpdateMay 7, 20263 updates tracked since enumeration

NPPES CertifiedMay 7, 2026

✔ NPI 1609183342 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LA2200X

License✔ Licensed in NY · F305433-1

50 S STEELE ST STE 950, Denver, CO 80209

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Other Names 1

Former Name (1)Susannah Williams

Secondary Practice Locations 2

Location 1347 5th Ave Ste 1402-342New York, NY 10016-5010 · Phone (646) 849-2782 · Fax (646) 349-0133

Location 212 Main St Unit 857Essex, CT 06426-7040 · Phone (646) 849-2782 · Fax (646) 349-0133

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Ms. Susannah Lynn Kerwin Anp-bc has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from October 1, 2024 through October 1, 2026.

Opt-Out Effective DateOctober 1, 2024

Opt-Out In Effect ThroughOctober 1, 2026Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80209 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

$89.43 typical visit price

range $58.06 – $174.82

Typical copayment $22.35 (range $14.51 – $43.70)

Most-billed visit code 99203

Established Patient

$102.03 typical visit price

range $18.88 – $142.79

Typical copayment $25.50 (range $4.72 – $35.69)

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.

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Other Providers at the Same Location NPPES 20

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

HELENE SIMONS, PSYD

Psychologist (Clinical)