What is Gerald Chai's NPI number?

Gerald Chai's National Provider Identifier (NPI) is 1952508665, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gerald Chai's specialty?

Gerald Chai is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).

Where is Gerald Chai located?

Gerald Chai's practice location on file with NPPES is 455 Philip Blvd Ste 140, Lawrenceville, GA 30046-8768.

What is Gerald Chai's phone number?

The practice phone number listed in the NPPES registry for Gerald Chai is (770) 962-3642.

Does Gerald Chai accept Medicare?

Gerald Chai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Gerald Chai's NPI active?

Yes — Gerald Chai's NPI (1952508665) is active in the NPPES registry as of the last update on 2020-04-14.

IndividualActiveAccepts Medicare

Gerald Chai, D.O.

NPI 1952508665 · Physical Medicine & Rehabilitation Physician · Lawrenceville, GA

Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Gerald Chai, D.O. is a Physical Medicine & Rehabilitation Physician provider in Lawrenceville, GA (NPI 1952508665).

Provider details

NPI number: 1952508665
Entity type: Individual
Primary specialty: Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
Credential: D.O.
Sex: Male
Sole proprietor: No
License: OT011928 (PA)

Specialties & taxonomies

Physical Medicine & Rehabilitation PhysicianPrimary208100000XLicense 66464 (GA)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000XLicense OT011928 (PA)
Student, Health Care

Profile Score

Detailed profile(87/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
18 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
6 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
1,841 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	541	$80
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	334	$112
Testing for Presence of Drug, Read By Direct Observation80305	216	$12
Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0480	206	$112
Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490	111	$59

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen	1,764	325
Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen	1,099	257
Oxycodone Hcl	1,067	177
Pregabalin	299	68
Gabapentin	283	101
Tizanidine Hcl	207	78

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$1,637 across 49 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Practice location

455 Philip Blvd Ste 140

Lawrenceville, GA 30046-8768

Phone: (770) 962-3642

Fax: (770) 962-3643

Street-level locationGet directions

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Mailing address