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DR. MICHAEL WARREN NIELSEN MD
NPI 1255301370
Emergency Medicine in San Diego, CA

Active since January 23, 2006PECOS Enrolled
200 W ARBOR DR, SAN DIEGO, CA 92103(619) 543-6236 Get Directions Write a Review

NPPES record last updated: February 4, 2010. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Michael Warren Nielsen Md NPPES

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

DR. MICHAEL WARREN NIELSEN MD (NPI 1255301370) is an individual emergency medicine provider in San Diego, California, licensed in California (A79412) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255301370
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. MICHAEL WARREN NIELSENCredential: MD
Location Address200 W ARBOR DRSan Diego, CA 92103-9001
Mailing Address3603 Ingraham StSan Diego, CA 92109-6717 · (858) 353-3530
Phone(619) 543-6236
Sole ProprietorYes
Enumeration DateJanuary 23, 2006
Last NPPES UpdateFebruary 4, 2010
✔ NPI 1255301370 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A79412
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
200 W ARBOR DR, San Diego, CA 92103
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Other Identifiers 5

Medicaid1255301370CA
Medicare PINCA159XCA
Medicare PINCA159YCA
Medicaid00A7941206141CA
Medicare PINCA159WCA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Michael Warren Nielsen 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.

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.

DR. RAMIN MOTARJEMI M.D.
Internal Medicine (Geriatric Medicine)
200 W ARBOR DR
SAN DIEGO, CA 92103
San Diego County (858) 249-2500
DR. KYLE PALMER EDMONDS M.D., FAAHPM
Hospice, Inpatient
200 W ARBOR DR
SAN DIEGO, CA 92103
San Diego County (800) 926-8273
SHAWN RAVEENTH VEDAMANI MD
Anesthesiology
200 W ARBOR DR
SAN DIEGO, CA 92103
San Diego County (800) 926-8273
DALE MICHAEL TRUJILLO NP
Nurse Practitioner
200 W ARBOR DR
SAN DIEGO, CA 92103
San Diego County (800) 926-8273
KAYLEE PETERSEN ARNP
Nurse Practitioner (Psychiatric/Mental Health)
200 W ARBOR DR
SAN DIEGO, CA 92103
San Diego County (800) 926-8273
IRENE NEVAREZ NP
Nurse Practitioner
200 W ARBOR DR
SAN DIEGO, CA 92103
San Diego County (800) 926-8273
WILLIAM JAMES MOSS M.D.
Student in an Organized Health Care Education/Training Program
200 W ARBOR DR
SAN DIEGO, CA 92103
San Diego County (508) 395-4189
JAMES HAMILTON JR. PA-C
Physician Assistant (Surgical)
200 W ARBOR DR
SAN DIEGO, CA 92103
San Diego County (858) 657-8200

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 Michael Nielsen's NPI number?

The NPI number for Michael Nielsen is 1255301370. It was assigned to this individual provider in the NPPES registry on January 23, 2006.

Where is Michael Nielsen located?

Michael Nielsen practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (619) 543-6236.

What is Michael Nielsen's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Michael Nielsen enrolled in Medicare?

Yes. Michael Nielsen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Michael Nielsen was last updated on February 4, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.