MADELINE UNDERWOOD MD
NPI 1427618685
Family Medicine in San Rafael, CA

Q: What is Madeline Underwood's NPI number?

The NPI number for Madeline Underwood is 1427618685. It was assigned to this individual provider in the NPPES registry on June 19, 2019.

Q: What is Madeline Underwood's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Active since June 19, 2019PECOS EnrolledAccepts Medicare Assignment

1004 NORTHGATE DR, SAN RAFAEL, CA 94903(888) 663-6331(415) 252-7176 Get Directions Write a Review

NPPES record last updated: March 14, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 14, 2025, Aug 6, 2024, Oct 6, 2023 and 2 more (5 updates tracked since 2019).

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About Madeline Underwood Md NPPES

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

MADELINE UNDERWOOD MD (NPI 1427618685) is an individual family medicine provider in San Rafael, California, licensed in Virginia (0116032868) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS and is a graduate of Virginia Commonwealth University, School Of Medicine (2019).

NPPES Registry Identity

NPI1427618685

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameMADELINE UNDERWOODCredential: MD

Location Address1004 NORTHGATE DRSan Rafael, CA 94903-2502

Mailing Address1 Embarcadero Ctr Ste 1900San Francisco, CA 94111-3723 · (415) 658-6791 · Fax (415) 520-0904

Phone(888) 663-6331

Fax(415) 252-7176

Sole ProprietorNo

Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 2019

Enumeration DateJune 19, 2019

Last NPPES UpdateMarch 14, 20255 updates tracked since enumeration

NPPES CertifiedMarch 14, 2025

✔ NPI 1427618685 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in VA · 0116032868

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1004 NORTHGATE DR, San Rafael, CA 94903

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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

Madeline Underwood 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 ID2264767086

PECOS Enrollment IDI20240711002046

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 Reassignment

Medicare enrollment records show Madeline Underwood reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

One Medical Group, Inc.

17 mi

Family Medicine

2 EMBARCADERO CTR LBBY LEVEL
San Francisco, CA 94111

Reassigned Medicare billing, California enrollment
291 clinicians in this Medicare group

NPI 1467781641 (415) 578-3100

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 7

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.

80 services63 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

63 services60 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.

23 services22 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

22 services22 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

17 services17 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94903 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

$104.67 typical visit price

range $69.07 – $202.63

Typical copayment $26.16 (range $17.26 – $50.65)

Most-billed visit code 99203

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 15

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

MRS. CHRISTINE ROSE HODGSON PNP

Nurse Practitioner (Pediatrics)