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AIDA CALVILLO MD
NPI 1225031727
Internal Medicine in Greenbrae, CA

Active since May 27, 2005PECOS EnrolledAccepts Medicare Assignment
250 BON AIR RD, GREENBRAE, CA 94904(415) 448-1500(415) 461-4229 Get Directions Write a Review

NPPES record last updated: July 22, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Aida Calvillo Md NPPES

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

AIDA CALVILLO MD (NPI 1225031727) is an individual internal medicine provider in Greenbrae, California, licensed in California (C51706) and active in the NPI registry since May 2005. She is enrolled in Medicare PECOS and is a graduate of University Of Washington School Of Medicine (1996).

NPPES Registry Identity

NPI1225031727
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameAIDA CALVILLOCredential: MD
Location Address250 BON AIR RDGreenbrae, CA 94904-1702
Mailing Address401 Forbes AveSan Rafael, CA 94901-1748 · (415) 456-9680
Phone(415) 448-1500
Fax(415) 461-4229
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 1996
Enumeration DateMay 27, 2005
Last NPPES UpdateJuly 22, 2015
✔ NPI 1225031727 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · C51706
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
250 BON AIR RD, Greenbrae, CA 94904
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro 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

Aida Calvillo 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 ID7517066756
PECOS Enrollment IDI20070628000344
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

2

Medicare enrollment records show Aida Calvillo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Marin Hospitalist Medical Group, Inc.
Same address
Internal Medicine
250 BON AIR RD, 3RD FLOOR
Greenbrae, CA 94904
  • Reassigned Medicare billing, California enrollment
  • 82 clinicians in this Medicare group
NPI 1023041753 (415) 925-7545
Permanente Medical Group Inc
9.6 mi
Internal Medicine
901 NEVIN
Richmond, CA 94801
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1235226531 (510) 307-1555

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94904 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
$154.04 typical visit price
range $69.07 – $202.63
Typical copayment $38.51 (range $17.26 – $50.65)
Most-billed visit code 99204
Established Patient
$119.61 typical visit price
range $23.44 – $166.64
Typical copayment $29.90 (range $5.86 – $41.66)
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.

MESKEREM DABA RN, BSN
Registered Nurse (Psychiatric/Mental Health)
250 BON AIR RD
GREENBRAE, CA 94904
Marin County (415) 473-6666
ALEC CHANG D.O.
Psychiatry & Neurology (Psychiatry)
250 BON AIR RD
GREENBRAE, CA 94904
Marin County (415) 473-6835
MARIN HOSPITALIST MEDICAL GROUP, INC.
Internal Medicine
250 BON AIR RD, 3RD FLOOR
GREENBRAE, CA 94904
Marin County (415) 925-7545
DR. STEPHEN C ALLISON M.D.
Psychiatry & Neurology (Psychiatry)
250 BON AIR RD
GREENBRAE, CA 94904
Marin County (415) 925-7663
ANNIE LINN STODDARD
Rehabilitation Practitioner
250 BON AIR RD
GREENBRAE, CA 94904
Marin County (415) 473-6835
SARENA NAPIER ASW
Counselor (Mental Health)
250 BON AIR RD
GREENBRAE, CA 94904
Marin County (415) 473-6619
JULIET LIANNE HUNTINGTON CNM
Advanced Practice Midwife
250 BON AIR RD
GREENBRAE, CA 94904
Marin County (415) 925-7010
ZAMBIA RICHEA PLAYER RN
Registered Nurse
250 BON AIR RD
GREENBRAE, CA 94904
Marin County (415) 473-6666

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 Aida Calvillo's NPI number?

The NPI number for Aida Calvillo is 1225031727. It was assigned to this individual provider in the NPPES registry on May 27, 2005.

Where is Aida Calvillo located?

Aida Calvillo practices at 250 Bon Air Rd, Greenbrae, CA 94904. The listed phone number is (415) 448-1500.

What is Aida Calvillo's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Aida Calvillo enrolled in Medicare?

Yes. Aida Calvillo 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 Aida Calvillo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aida Calvillo reassigns Medicare benefits to 2 organizations: Marin Hospitalist Medical Group, Inc. (Greenbrae, CA) and Permanente Medical Group Inc (Richmond, CA). 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 Aida Calvillo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Aida Calvillo accept?

Health plans from Taro Health list Aida Calvillo 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 Aida Calvillo was last updated on July 22, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.