LAWRENCE MA MD
NPI 1487941696
Pediatrics in Palo Alto, CA
About Lawrence Ma Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAWRENCE MA MD (NPI 1487941696) is an individual pediatrics provider in Palo Alto, California, licensed in California (A122325) and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Lawrence Ma Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Lawrence Ma reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 1,051 clinicians in this Medicare group
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 6
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Lawrence Ma's NPI number?
The NPI number for Lawrence Ma is 1487941696. It was assigned to this individual provider in the NPPES registry on July 8, 2011.
Where is Lawrence Ma located?
Lawrence Ma practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.
What is Lawrence Ma's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Lawrence Ma enrolled in Medicare?
Yes. Lawrence Ma is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Lawrence Ma's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lawrence Ma reassigns Medicare benefits to 3 organizations: Lpch Medical Group Div Of Lucile (Palo Alto, CA), Stanford Health Care (Stanford, CA) and Regents Of The University Of California (San Diego, 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 Lawrence Ma'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 Lawrence Ma was last updated on May 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.
# Lawrence Ma, MD · NPI 1487941696
Pediatrics physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since July 8, 2011.
## Identity
- **NPI:** 1487941696 (Entity type: Individual)
- **Enumerated:** July 8, 2011
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A122325 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 725 WELCH RD, Palo Alto, CA 94304-1601
- **Phone:** (650) 497-8000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Stanford Health Care (NPI 1437292927, Stanford, CA); Regents Of The University Of California (NPI 1487772380, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 6, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1487941696) · Data from the CMS NPPES public registry.