DR. JOHN J. WILLEMS M.D.
NPI 1184664591
Obstetrics & Gynecology in La Jolla, CA

Q: What is John Willems's NPI number?

The NPI number for John Willems is 1184664591. It was assigned to this individual provider in the NPPES registry on June 7, 2006.

Q: What is John Willems's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for John Willems was last updated on June 30, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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 June 07, 2006PECOS EnrolledAccepts Medicare Assignment

10666 N TORREY PINES RD, LA JOLLA, CA 92037(858) 764-9080 Get Directions Write a Review

NPPES record last updated: June 30, 2009. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. John J. Willems M.d. NPPES

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

DR. JOHN J. WILLEMS M.D. (NPI 1184664591) is an individual obstetrics & gynecology provider in La Jolla, California, licensed in California (G35952) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of New York Medical College (1973).

NPPES Registry Identity

NPI1184664591

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameDR. JOHN J. WILLEMSCredential: M.D.

Location Address10666 N TORREY PINES RDLa Jolla, CA 92037-1027

Mailing AddressFile# 54433Los Angeles, CA 90074-0001

Phone(858) 764-9080

Sole ProprietorNo

Medical School CMSNew York Medical CollegeGraduated 1973

Enumeration DateJune 7, 2006

Last NPPES UpdateJune 30, 2009

✔ NPI 1184664591 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · G35952

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

Also ListedObstetrics & Gynecology · Reproductive EndocrinologyTaxonomy 207VE0102X · License G35952 (CA)

10666 N TORREY PINES RD, La Jolla, CA 92037

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Other Identifiers 3

Medicare UPINA46532CA

Medicare PINWG35952BCA

Medicaid00G359520CA

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. John J. Willems 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 ID6406927565

PECOS Enrollment IDI20080617000353

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 5

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.

200 services125 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.

24 services22 patients

Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 76830

An ultrasound scan of the lower abdominal region is a safe, non-invasive procedure that uses sound waves to create images of internal structures. This helps in checking the health of reproductive organs and detecting any abnormalities. The scan is done via a small probe inserted into the body.

19 services17 patients

Complete ultrasound scan of pelvis 76856

A complete ultrasound scan of the pelvis is a safe, non-invasive imaging procedure. It uses sound waves to create pictures of your lower abdomen area, helping doctors to evaluate and diagnose any potential issues. It's painless and usually takes about 30 minutes.

19 services18 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.

17 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92037 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

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

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 20

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

NATALIE ALBASHA MD

Student in an Organized Health Care Education/Training Program