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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. AARON DANIEL TWARD M.D. PH.D.
NPI 1194921205
Otolaryngology in San Francisco, CA

Active since June 25, 2007PECOS EnrolledAccepts Medicare Assignment
2233 POST ST, SAN FRANCISCO, CA 94115(617) 353-2757 Get Directions Write a Review

NPPES record last updated: June 22, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Aaron Daniel Tward M.d. Ph.d. NPPES

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

DR. AARON DANIEL TWARD M.D. PH.D. (NPI 1194921205) is an individual otolaryngology provider in San Francisco, California, licensed in California (A133557) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of University Of California, San Francisco School Of Medicine (2007).

NPPES Registry Identity

NPI1194921205
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameDR. AARON DANIEL TWARDCredential: M.D. PH.D.
Location Address2233 POST STSan Francisco, CA 94115-3470
Mailing Address2233 Post St, Box 0342San Francisco, CA 94115-3470 · (415) 353-2757
Phone(617) 353-2757
Sole ProprietorNo
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 2007
Enumeration DateJune 25, 2007
Last NPPES UpdateJune 22, 2026
NPPES CertifiedJune 22, 2026
✔ NPI 1194921205 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in CA · A133557
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
Also ListedOtolaryngology · Otology & NeurotologyTaxonomy 207YX0901X · License A133557 (CA)
Also ListedSurgeryTaxonomy 208600000X · License BB5204071-AT61 (MA)
2233 POST ST, San Francisco, CA 94115
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Secondary Practice Location 1

Location 12380 Sutter StSan Francisco, CA 94115-3006 · Phone (415) 353-2757

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 Daniel Tward M.d. Ph.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 ID6305006313
PECOS Enrollment IDI20150305002214
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 94115 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
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.

MAURA ANGELICA GRANADOS DUNCAN FNP
Nurse Practitioner (Family)
2233 POST ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 353-2757
CHASE HEATON
Otolaryngology
2233 POST ST
SAN FRANCISCO, CA 94115
San Francisco County (630) 988-8222
DR. NONNA VOLFSON DDS
Dentist (General Practice)
2233 POST ST, STE 102
SAN FRANCISCO, CA 94115
San Francisco County (415) 567-2900
ISAAC SOLOMON MD
Student in an Organized Health Care Education/Training Program
2233 POST ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 476-4952
DR. YULY VILDERMAN DDS
Dentist
2233 POST ST, STE 102
SAN FRANCISCO, CA 94115
San Francisco County (415) 567-2900
YULY VILDERMAN PROFESSIONAL DENTAL CORPORATION
Dentist (General Practice)
2233 POST ST, STE 102
SAN FRANCISCO, CA 94115
San Francisco County (415) 567-2900

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 Tward's NPI number?

The NPI number for Aaron Tward is 1194921205. It was assigned to this individual provider in the NPPES registry on June 25, 2007.

Where is Aaron Tward located?

Aaron Tward practices at 2233 Post St, San Francisco, CA 94115. The listed phone number is (617) 353-2757.

What is Aaron Tward's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Aaron Tward enrolled in Medicare?

Yes. Aaron Tward 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 Tward was last updated on June 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 46 days 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.