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DR. AARON CHEN D.O.
NPI 1780043703
Dermatology in San Francisco, CA

Active since February 18, 2016PECOS EnrolledAccepts Medicare Assignment
2001 UNION ST STE 520, SAN FRANCISCO, CA 94123(415) 922-3344(415) 921-7759 Get Directions Write a Review

NPPES record last updated: January 3, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 3, 2024, Oct 23, 2019, Feb 18, 2016 (3 updates tracked since 2016).

About Dr. Aaron Chen D.o. NPPES

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

DR. AARON CHEN D.O. (NPI 1780043703) is an individual dermatology provider in San Francisco, California, licensed in California (22080) and active in the NPI registry since February 2016. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of New England, College Of Osteo Medicine (2016).

NPPES Registry Identity

NPI1780043703
Entity TypeIndividualMale
Primary Taxonomy207N00000X
Provider Legal NameDR. AARON CHENCredential: D.O.
Location Address2001 UNION ST STE 520San Francisco, CA 94123-4110
Mailing Address7031 Sw 62nd AveSouth Miami, FL 33143-4701 · (305) 284-7500
Phone(415) 922-3344
Fax(415) 921-7759
Sole ProprietorNo
Medical School CMSUniversity Of New England, College Of Osteo MedicineGraduated 2016
Enumeration DateFebruary 18, 2016
Last NPPES UpdateJanuary 3, 20243 updates tracked since enumeration
NPPES CertifiedJanuary 3, 2024
✔ NPI 1780043703 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
License✔ Licensed in CA · 22080
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Also ListedFamily MedicineTaxonomy 207Q00000X · License OS15102 (FL)
2001 UNION ST STE 520, San Francisco, CA 94123
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Secondary Practice Locations 3

Location 17031 SW 62nd AveSouth Miami, FL 33143-4701 · Phone (305) 284-7500
Location 23060 BroadwayRedwood City, CA 94062-1512 · Phone (650) 361-1177 · Fax (650) 361-1826
Location 33838 California St Rm 610San Francisco, CA 94118-1508 · Phone (415) 387-8007 · Fax (415) 387-8008

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include 22 Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Aaron Chen D.o. 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 ID4284971540
PECOS Enrollment IDI20190124000315, I20240304003246
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.

Medicare Billing Reassignments

4

Medicare enrollment records show Aaron Chen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Berman Skin Institute Medical Group Inc
32 mi
Dermatology
4300 EL CAMINO REAL STE 100
Los Altos, CA 94022
  • Reassigned Medicare billing, California enrollment
  • 14 clinicians in this Medicare group
NPI 1528175528 (650) 325-6000
Csi Medical Group
363 mi
MOHS-Micrographic Surgery
1360 W 6TH ST STE 370
San Pedro, CA 90732
  • Reassigned Medicare billing, California enrollment
  • 179 clinicians in this Medicare group
NPI 1871909804 (310) 519-8890
Eastern Medical Group Corp
2,588 mi
General Practice
8900 CORAL WAY, SUITE 202
Miami, FL 33165
  • Reassigned Medicare billing, Florida enrollment
  • 3 clinicians in this Medicare group
NPI 1093241465 (305) 392-0765
Mountain Of Love Therapy LLC
2,593 mi
Community/Behavioral Health
330 SW 27TH AVE STE 609
Miami, FL 33135
  • Reassigned Medicare billing, Florida enrollment
  • 2 clinicians in this Medicare group
NPI 1396339057 (786) 378-0741

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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.

Destruction of precancer skin growth, 2-14 growths 17003
This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.
79 services16 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.
67 services43 patients
Destruction of precancer skin growth, 1 growth 17000
"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.
23 services17 patients
Destruction of skin growth, 1-14 growths 17110
"Destruction of skin growth" refers to a procedure where 1-14 abnormal skin growths are removed. This is done using methods such as freezing, burning, or laser therapy. It helps prevent the growth from causing discomfort or turning into a more serious condition.
16 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94123 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
$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.

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 Chen's NPI number?

The NPI number for Aaron Chen is 1780043703. It was assigned to this individual provider in the NPPES registry on February 18, 2016.

Where is Aaron Chen located?

Aaron Chen practices at 2001 Union St Ste 520, San Francisco, CA 94123. The listed phone number is (415) 922-3344.

What is Aaron Chen's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Aaron Chen enrolled in Medicare?

Yes. Aaron Chen 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.

Which organizations bill Medicare for Aaron Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Chen reassigns Medicare benefits to 4 organizations: Berman Skin Institute Medical Group Inc (Los Altos, CA), Csi Medical Group (San Pedro, CA), Eastern Medical Group Corp (Miami, FL) and Mountain Of Love Therapy LLC (Miami, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aaron Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Aaron Chen accept?

Health plans from 22 Health list Aaron Chen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Aaron Chen was last updated on January 3, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.