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DR. MARY JACENA SIY LEIGH MD
NPI 1881882124
Pediatrics - Developmental - Behavioral Pediatrics in Sacramento, CA

Active since October 11, 2007PECOS Enrolled
2825 50TH ST, SACRAMENTO, CA 95817(916) 703-0261 Get Directions Write a Review

NPPES record last updated: January 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Mary Jacena Siy Leigh Md NPPES

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

DR. MARY JACENA SIY LEIGH MD (NPI 1881882124) is an individual developmental - behavioral pediatrics provider in Sacramento, California, licensed in California (A101355) and active in the NPI registry since October 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881882124
Entity TypeIndividualFemale
Primary Taxonomy2080P0006X
Provider Legal NameDR. MARY JACENA SIY LEIGHCredential: MD
Location Address2825 50TH STSacramento, CA 95817-2310
Mailing Address2825 50th StSacramento, CA 95817-2310
Phone(916) 703-0261
Sole ProprietorNo
Enumeration DateOctober 11, 2007
Last NPPES UpdateJanuary 21, 2022
NPPES CertifiedJanuary 21, 2022
✔ NPI 1881882124 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Developmental - Behavioral PediatricsAllopathic & Osteopathic Physicians
Taxonomy Code2080P0006X
License✔ Licensed in CA · A101355
Definition
A developmental-behavioral specialist is a pediatrician with special training and experience who aims to foster understanding and promotion of optimal development of children and families through research, education, clinical care and advocacy efforts. This physician assists in the prevention, diagnosis, and management of developmental difficulties and problematic behaviors in children and in the family dysfunctions that compromise children's development.
Also ListedPediatricsTaxonomy 208000000X · License A101355 (CA)
2825 50TH ST, Sacramento, CA 95817
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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 (PECOS)

Dr. Mary Jacena Siy Leigh 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.

Medicare Billing Reassignment

Medicare enrollment records show Mary Jacena Leigh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The Univ Of Ca
Same address
Clinical Child & Adolescent
2825 50TH ST
Sacramento, CA 95817
  • Reassigned Medicare billing, California enrollment
  • 2,570 clinicians in this Medicare group
NPI 1447423959 (916) 703-0315

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

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. MARY BETH J STEINFELD M.D.
Pediatrics (Developmental - Behavioral Pediatrics)
2825 50TH ST, UC DAVIS DEPARTMENT OF PEDIATRICS
SACRAMENTO, CA 95817
Sacramento County (916) 703-0271
MS. SUSAN C BACALMAN M.S.W.
Social Worker (Clinical)
2825 50TH ST
SACRAMENTO, CA 95817
Sacramento County (916) 703-0305
MS. OYINDAMOLA TOLULOPE ADEDIPE MS
Student in an Organized Health Care Education/Training Program
2825 50TH ST
SACRAMENTO, CA 95817
Sacramento County (916) 703-0300
HEATHER MARIE ELAHI
Student in an Organized Health Care Education/Training Program
2825 50TH ST
SACRAMENTO, CA 95817
Sacramento County (916) 703-0300
DR. LAUREN B. PLUMER M.D.
Pediatrics (Developmental - Behavioral Pediatrics)
2825 50TH ST
SACRAMENTO, CA 95817
Sacramento County (916) 703-0262
DR. MADELENA MICHELE MARTIN M.D.
Pediatrics
2825 50TH ST
SACRAMENTO, CA 95817
Sacramento County (916) 703-0300
MS. JO ANN SHEAR OTR/L
Occupational Therapist
2825 50TH ST
SACRAMENTO, CA 95817
Sacramento County (916) 703-0341
SARA MARIE KNAUFT
Pediatrics (Developmental - Behavioral Pediatrics)
2825 50TH ST
SACRAMENTO, CA 95817
Sacramento County (916) 703-0280

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 Mary Jacena Leigh's NPI number?

The NPI number for Mary Jacena Leigh is 1881882124. It was assigned to this individual provider in the NPPES registry on October 11, 2007.

Where is Mary Jacena Leigh located?

Mary Jacena Leigh practices at 2825 50th St, Sacramento, CA 95817. The listed phone number is (916) 703-0261.

What is Mary Jacena Leigh's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Developmental - Behavioral Pediatrics, with taxonomy code 2080P0006X.

Is Mary Jacena Leigh enrolled in Medicare?

Yes. Mary Jacena Leigh is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Jacena Leigh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Jacena Leigh reassigns Medicare benefits to Regents Of The Univ Of Ca (Sacramento, CA). The 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 Mary Jacena Leigh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Jacena Leigh was last updated on January 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.