DR. JOHN JULIUS WILLSEN M.D.
NPI 1053497347
Dermatology - Procedural Dermatology in Turlock, CA

Q: What is John Willsen's NPI number?

The NPI number for John Willsen is 1053497347. It was assigned to this individual provider in the NPPES registry on October 29, 2006.

Q: What is John Willsen's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in Procedural Dermatology, with taxonomy code 207NS0135X.

Q: When was this NPI record last updated?

The NPPES record for John Willsen was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since October 29, 2006PECOS Enrolled

1199 DELBON AVE, SUITE2, TURLOCK, CA 95382(209) 668-3063(209) 668-4992 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. John Julius Willsen M.d. NPPES

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

DR. JOHN JULIUS WILLSEN M.D. (NPI 1053497347) is an individual procedural dermatology provider in Turlock, California, licensed in California (G36877) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1053497347

Entity TypeIndividualMale

Primary Taxonomy207NS0135X

Provider Legal NameDR. JOHN JULIUS WILLSENCredential: M.D.

Location Address1199 DELBON AVE, SUITE2Turlock, CA 95382-2015

Mailing Address1199 Delbon Ave, Suite2Turlock, CA 95382-2015 · (209) 668-3063 · Fax (209) 668-4992

Phone(209) 668-3063

Fax(209) 668-4992

Sole ProprietorYes

Enumeration DateOctober 29, 2006

Last NPPES UpdateFebruary 11, 2022

✔ NPI 1053497347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatology · Procedural DermatologyAllopathic & Osteopathic Physicians

Taxonomy Code207NS0135X

License✔ Licensed in CA · G36877

Definition

Procedural Dermatology, a subspecialty of Dermatology, encompassing a wide variety of surgical procedures and methods to remove or modify skin tissue for health or cosmetic benefit. These methods include scalpel surgery, laser surgery, chemical surgery, cryosurgery (liquid nitrogen), electrosurgery, aspiration surgery, liposuction, injection of filler substances, and Mohs micrographic controlled surgery (a special technique for the removal of growths, especially skin cancers).

1199 DELBON AVE, Turlock, CA 95382

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John Julius Willsen M.d. 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 Reassignment

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

Permanente Medical Group Inc

43 mi

Internal Medicine

7373 WEST LANE
Stockton, CA 95210

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1548343510 (209) 476-2000

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 95382 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

$90.32 typical visit price

range $58.87 – $176.60

Typical copayment $22.58 (range $14.71 – $44.15)

Most-billed visit code 99203

Established Patient

$73.16 typical visit price

range $19.28 – $144.60

Typical copayment $18.29 (range $4.82 – $36.15)

Most-billed visit code 99213

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 6

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

DR. ALEXANDER RONALD EVENS D.O.

Internal Medicine (Infectious Disease)

1199 DELBON AVE, SUITE 5
TURLOCK, CA 95382

Stanislaus County (209) 656-0183

ALEXANDER EVENS, DO INC

Internal Medicine (Infectious Disease)

1199 DELBON AVE, STE 5
TURLOCK, CA 95382

Stanislaus County (209) 656-0183

MR. ROBERT LEE HILEMAN R.P.T.

Specialist

1199 DELBON AVE, SUITE 4
TURLOCK, CA 95382

Stanislaus County (209) 632-4188

RICHARD W. SLOVEK, MD PC

Orthopaedic Surgery

1199 DELBON AVE, SUITE 1
TURLOCK, CA 95382

Stanislaus County (209) 668-6449

HUY NGOC DAO DO

Surgery

1199 DELBON AVE, STE 5
TURLOCK, CA 95382

Stanislaus County (209) 656-0183

GORUM ORTHOPEDICS & ASSOCIATES

Orthopaedic Surgery

1199 DELBON AVE, STE 1
TURLOCK, CA 95382

Stanislaus County (209) 342-2300

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 Willsen's NPI number?

The NPI number for John Willsen is 1053497347. It was assigned to this individual provider in the NPPES registry on October 29, 2006.

Where is John Willsen located?

John Willsen practices at 1199 Delbon Ave Suite2, Turlock, CA 95382. The listed phone number is (209) 668-3063.

What is John Willsen's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in Procedural Dermatology, with taxonomy code 207NS0135X.

Is John Willsen enrolled in Medicare?

Yes. John Willsen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Willsen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Willsen reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, CA). 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 John Willsen'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 John Willsen was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.