DR. AARON BARAK NEINSTEIN MD
NPI 1205074028
Internal Medicine - Endocrinology, Diabetes & Metabolism in San Francisco, CA

Active since February 02, 2009PECOS EnrolledAccepts Medicare Assignment
400 PARNASSUS AVENUE, STE A550, SAN FRANCISCO, CA 94143(415) 353-2350(415) 353-2337 Get Directions Write a Review

NPPES record last updated: May 15, 2018. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Aaron Barak Neinstein Md NPPES

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

DR. AARON BARAK NEINSTEIN MD (NPI 1205074028) is an individual endocrinology, diabetes & metabolism provider in San Francisco, California, licensed in California (A106501) and active in the NPI registry since February 2009. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2007).

NPPES Registry Identity

NPI1205074028
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameDR. AARON BARAK NEINSTEINCredential: MD
Location Address400 PARNASSUS AVENUE, STE A550San Francisco, CA 94143
Mailing Address400 Parnassus Avenue, Ste A550San Francisco, CA 94143-1222 · (415) 353-2350 · Fax (415) 353-2337
Fax(415) 353-2337
Sole ProprietorNo
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2007
Enumeration DateFebruary 2, 2009
Last NPPES UpdateMay 15, 2018
NPI 1205074028 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License Licensed in CA · A106501
Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Also ListedPreventive Medicine · Clinical InformaticsTaxonomy 2083C0008X · License A106501 (CA)
400 PARNASSUS AVENUE, San Francisco, CA 94143

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 Barak Neinstein Md 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 ID5193857209
PECOS Enrollment IDI20100724000027
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

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
16 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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
$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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

External ambulatory infusion pump, insulin E0784
DME-Other DME · category DE017N
3 suppliers19 claims19 services$311.10 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
7 suppliers116 claims116 services$193.57 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 8

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

Urology
400 PARNASSUS AVENUE, 6TH FLOOR, A610
SAN FRANCISCO, CA 94143
Internal Medicine
400 PARNASSUS AVENUE, 4TH FLOOR, BOX 0324
SAN FRANCISCO, CA 94143
Physical Therapist
400 PARNASSUS AVENUE, A68
SAN FRANCISCO, CA 94143
Internal Medicine
400 PARNASSUS AVENUE, 4TH FLOOR, BOX 0324
SAN FRANCISCO, CA 94143
Neuromusculoskeletal Medicine & OMM
400 PARNASSUS AVENUE, A837
SAN FRANCISCO, CA 94143
Physical Therapist
400 PARNASSUS AVENUE, REHABILITATIVE SERVICES RM A68
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
400 PARNASSUS AVENUE, SIXTH FLOOR
SAN FRANCISCO, CA 94143
General Acute Care Hospital
400 PARNASSUS AVENUE, SUITE A808
SAN FRANCISCO, CA 94143

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 Neinstein's NPI number?

The NPI number for Aaron Neinstein is 1205074028. It was assigned to this individual provider in the NPPES registry on February 2, 2009.

Where is Aaron Neinstein located?

Aaron Neinstein practices at 400 Parnassus Avenue Ste A550, San Francisco, CA 94143. The listed phone number is (415) 353-2350.

What is Aaron Neinstein's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Aaron Neinstein enrolled in Medicare?

Yes. Aaron Neinstein 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 Neinstein was last updated on May 15, 2018. NPI Profile syncs with the weekly NPPES data releases published by CMS.