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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

R. LAWRENCE ST. CLAIR M.D.
NPI 1841255023
Psychiatry & Neurology - Psychiatry in Wellesley, MA

Active since April 19, 2006PECOS EnrolledAccepts Medicare Assignment
11 GILSON RD, WELLESLEY, MA 02481(781) 235-7720(781) 235-7720 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About R. Lawrence St. Clair M.d. NPPES

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

R. LAWRENCE ST. CLAIR M.D. (NPI 1841255023) is an individual psychiatry provider in Wellesley, Massachusetts, licensed in Massachusetts (38181) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of Perelman School Of Med At The University Of Pennsylvania (1974).

NPPES Registry Identity

NPI1841255023
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameR. LAWRENCE ST. CLAIRCredential: M.D.
Location Address11 GILSON RDWellesley, MA 02481-2909
Mailing Address11 Gilson RdWellesley, MA 02481-2909 · (781) 235-7720 · Fax (781) 235-7720
Phone(781) 235-7720
Fax(781) 235-7720
Sole ProprietorNo
Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 1974
Enumeration DateApril 19, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1841255023 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MA · 38181
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
11 GILSON RD, Wellesley, MA 02481
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Other Identifiers 1

Medicaid2061872MA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

R. Lawrence St. Clair M.d. 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 ID9436176377
PECOS Enrollment IDI20051029000069
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 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.
292 services15 patients
Psychotherapy with evaluation and management visit, 45 minutes 90836
Psychotherapy with evaluation and management is a 45-minute session where a healthcare provider discusses your mental and emotional health. They assess your current state, manage any issues, and help you develop coping strategies. This service aims to improve your overall well-being.
290 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02481 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
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

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

DR. BEVERLY PAGE ST. CLAIR M.D.
Psychiatry & Neurology (Psychiatry)
11 GILSON RD
WELLESLEY, MA 02481
Norfolk County (781) 235-7720

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 R. Lawrence St. Clair's NPI number?

The NPI number for R. Lawrence St. Clair is 1841255023. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Where is R. Lawrence St. Clair located?

R. Lawrence St. Clair practices at 11 Gilson Rd, Wellesley, MA 02481. The listed phone number is (781) 235-7720.

What is R. Lawrence St. Clair's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is R. Lawrence St. Clair enrolled in Medicare?

Yes. R. Lawrence St. Clair 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.

When was this NPI record last updated?

The NPPES record for R. Lawrence St. Clair was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days 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.