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DR. AARON PESSL M.D.
NPI 1063425072
Emergency Medicine in Hayward, CA

Active since August 14, 2006PECOS EnrolledAccepts Medicare Assignment
27400 HESPERIAN BLVD, HAYWARD, CA 94545(510) 784-4525 Get Directions Write a Review

NPPES record last updated: December 9, 2021. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Dr. Aaron Pessl M.d. NPPES

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

DR. AARON PESSL M.D. (NPI 1063425072) is an individual emergency medicine provider in Hayward, California, licensed in California (A89998) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Tulane University School Of Medicine (2003).

NPPES Registry Identity

NPI1063425072
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. AARON PESSLCredential: M.D.
Location Address27400 HESPERIAN BLVDHayward, CA 94545-4235
Mailing Address2247 31st AveSan Francisco, CA 94116-1640 · (415) 731-1125
Phone(510) 784-4525
Sole ProprietorNo
Medical School CMSTulane University School Of MedicineGraduated 2003
Enumeration DateAugust 14, 2006
Last NPPES UpdateDecember 9, 2021
✔ NPI 1063425072 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 · A89998
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.
27400 HESPERIAN BLVD, Hayward, CA 94545
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Other Identifiers 1

Medicaid00A899980CA

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. Aaron Pessl 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 ID3476575085
PECOS Enrollment IDI20051223000205
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 94545 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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. MANI M KAMMULA PHARMD
Pharmacist
27400 HESPERIAN BLVD
HAYWARD, CA 94545
Alameda County (510) 784-4462
JAY EDWARD VALLORTIGARA RPH
Pharmacist (Oncology)
27400 HESPERIAN BLVD
HAYWARD, CA 94545
Alameda County (510) 784-4479
BINAL ARUNKUMAR PATEL RPH
Pharmacist
27400 HESPERIAN BLVD
HAYWARD, CA 94545
Alameda County (510) 784-4463
MS. ISABEL PAPP PA
Physician Assistant (Medical)
27400 HESPERIAN BLVD
HAYWARD, CA 94545
Alameda County (510) 784-4528
WAYNE BARBER MD
Otolaryngology
27400 HESPERIAN BLVD
HAYWARD, CA 94545
Alameda County (510) 784-4000
DR. JARED MICHIO NAKASHIMA PHARM.D.
Pharmacist
27400 HESPERIAN BLVD, KAISER HAYWARD INPATIENT PHARMACY
HAYWARD, CA 94545
Alameda County (510) 784-4938
CHITRA R. REDDY MD
Internal Medicine (Nephrology)
27400 HESPERIAN BLVD
HAYWARD, CA 94545
Alameda County (510) 784-4000
ROBERT L. SACHS MD
Allergy & Immunology
27400 HESPERIAN BLVD
HAYWARD, CA 94545
Alameda County (510) 784-4000

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 Aaron Pessl's NPI number?

The NPI number for Aaron Pessl is 1063425072. It was assigned to this individual provider in the NPPES registry on August 14, 2006.

Where is Aaron Pessl located?

Aaron Pessl practices at 27400 Hesperian Blvd, Hayward, CA 94545. The listed phone number is (510) 784-4525.

What is Aaron Pessl's specialty?

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

Is Aaron Pessl enrolled in Medicare?

Yes. Aaron Pessl is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Aaron Pessl was last updated on December 9, 2021. 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.