WILLIAM E TOPPEN M.D.
NPI 1215399407
Emergency Medicine - Undersea and Hyperbaric Medicine in San Diego, CA

Q: What is William Toppen's NPI number?

The NPI number for William Toppen is 1215399407. It was assigned to this individual provider in the NPPES registry on March 25, 2016.

Q: What is William Toppen's specialty?

The primary specialty registered for this NPI is Emergency Medicine, specializing in Undersea and Hyperbaric Medicine, with taxonomy code 207PE0005X.

Q: When was this NPI record last updated?

The NPPES record for William Toppen was last updated on January 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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 March 25, 2016PECOS EnrolledAccepts Medicare Assignment

200 W ARBOR DR, SAN DIEGO, CA 92103(800) 926-8273 Get Directions Write a Review

NPPES record last updated: January 29, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 10, 2022, Oct 3, 2019, Mar 25, 2016 (3 updates tracked since 2016).

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About William E Toppen M.d. NPPES

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

WILLIAM E TOPPEN M.D. (NPI 1215399407) is an individual undersea and hyperbaric medicine provider in San Diego, California, licensed in California (A155816) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of California, Geffen School Of Medicine (2016).

NPPES Registry Identity

NPI1215399407

Entity TypeIndividualMale

Primary Taxonomy207PE0005X

Provider Legal NameWILLIAM E TOPPENCredential: M.D.

Location Address200 W ARBOR DRSan Diego, CA 92103-9000

Mailing AddressFile 57326Los Angeles, CA 90074-7326 · (800) 926-8273

Phone(800) 926-8273

Sole ProprietorNo

Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2016

Enumeration DateMarch 25, 2016

Last NPPES UpdateJanuary 29, 20253 updates tracked since enumeration

NPPES CertifiedJanuary 29, 2025

✔ NPI 1215399407 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency Medicine · Undersea and Hyperbaric MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207PE0005X

License✔ Licensed in CA · A155816

Definition

A specialist who treats decompression illness and diving accident cases and uses hyperbaric oxygen therapy to treat such conditions as carbon monoxide poisoning, gas gangrene, non-healing wounds, tissue damage from radiation and burns, and bone infections. This specialist also serves as a consultant to other physicians in all aspects of hyperbaric chamber operations, and assesses risks and applies appropriate standards to prevent disease and disability in divers and other persons working in altered atmospheric conditions.

Also ListedInternal MedicineTaxonomy 207R00000X · License A155816 (CA)

200 W ARBOR DR, San Diego, CA 92103

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Secondary Practice Locations 2

Location 1757 Westwood PlzLos Angeles, CA 90095-7419 · Phone (310) 825-7417

Location 29300 Campus Point DrLA Jolla, CA 92037-1300 · Phone (800) 926-8273

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

William E Toppen 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 ID3173875556

PECOS Enrollment IDI20190605001316

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

249 services91 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

114 services70 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

39 services39 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

29 services29 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

18 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92103 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

$94.87 typical visit price

range $62.10 – $184.71

Typical copayment $23.71 (range $15.52 – $46.17)

Most-billed visit code 99203

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

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 20

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

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