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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MARGARET LEFTWICH MILLER MD
NPI 1093768160
Psychiatry & Neurology - Forensic Psychiatry in Napa, CA

Active since May 18, 2006PECOS Enrolled
2100 NAPA VALLEJO HIGHWAY, NAPA, CA 94558(707) 253-5000(707) 253-5513 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Margaret Leftwich Miller Md NPPES

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

MARGARET LEFTWICH MILLER MD (NPI 1093768160) is an individual forensic psychiatry provider in Napa, California, licensed in California (A49932) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1093768160
Entity TypeIndividualFemale
Primary Taxonomy2084F0202X
Provider Legal NameMARGARET LEFTWICH MILLERCredential: MD
Location Address2100 NAPA VALLEJO HIGHWAYNapa, CA 94558-6293
Mailing Address1600 9th St, Room 205 Mailstop 2-3Sacramento, CA 95814-6414 · (916) 654-2431 · Fax (916) 654-3186
Phone(707) 253-5000
Fax(707) 253-5513
Sole ProprietorNo
Enumeration DateMay 18, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1093768160 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Forensic PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084F0202X
License✔ Licensed in CA · A49932
Definition

Forensic Psychiatry is a subspecialty with psychiatric focus on interrelationships with civil, criminal and administrative law, evaluation and specialized treatment of individuals involved with the legal system, incarcerated in jails, prisons, and forensic psychiatry hospitals.

2100 NAPA VALLEJO HIGHWAY, Napa, CA 94558
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaret Leftwich Miller Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 2

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 high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
21 services14 patients
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.
20 services13 patients

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.

DR. KENNETH ROBERT LAKRITZ PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
HOWARD MATTHEW EISENSTARK MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
CRISTIAN G MATEESCU MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
DR. KAREN ELIZABETH PHILLIPS PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
MS. MICHELE LEE MCCOLM PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
AHMED M HAGGAG MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
AMARPREET SINGH
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
MICHAEL L VENARD PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000

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 Margaret Miller's NPI number?

The NPI number for Margaret Miller is 1093768160. It was assigned to this individual provider in the NPPES registry on May 18, 2006.

Where is Margaret Miller located?

Margaret Miller practices at 2100 Napa Vallejo Highway, Napa, CA 94558. The listed phone number is (707) 253-5000.

What is Margaret Miller's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Forensic Psychiatry, with taxonomy code 2084F0202X.

Is Margaret Miller enrolled in Medicare?

Yes. Margaret Miller is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Margaret Miller was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.