DR. DAVID H TSAI M.D.
NPI 1386673713
Internal Medicine - Geriatric Medicine in Lowell, MA

Q: What is David Tsai's NPI number?

The NPI number for David Tsai is 1386673713. It was assigned to this individual provider in the NPPES registry on June 30, 2006.

Q: What is David Tsai's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Q: When was this NPI record last updated?

The NPPES record for David Tsai was last updated on December 9, 2021. 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.

Active since June 30, 2006PECOS Enrolled

1081 VARNUM AVE, LOWELL, MA 01854(978) 427-6810(978) 427-6887 Get Directions Write a Review

NPPES record last updated: December 9, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. David H Tsai M.d. NPPES

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

DR. DAVID H TSAI M.D. (NPI 1386673713) is an individual geriatric medicine provider in Lowell, Massachusetts, licensed in Massachusetts (158429) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1386673713

Entity TypeIndividualMale

Primary Taxonomy207RG0300X

Provider Legal NameDR. DAVID H TSAICredential: M.D.

Location Address1081 VARNUM AVELowell, MA 01854-1131

Mailing Address1081 Varnum AveLowell, MA 01854-1131 · (978) 427-6810 · Fax (978) 427-6887

Phone(978) 427-6810

Fax(978) 427-6887

Sole ProprietorNo

Enumeration DateJune 30, 2006

Last NPPES UpdateDecember 9, 2021

NPPES CertifiedDecember 9, 2021

✔ NPI 1386673713 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RG0300X

License✔ Licensed in MA · 158429

Definition

An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

Also ListedInternal Medicine · Hospice and Palliative MedicineTaxonomy 207RH0002X · License 158429 (MA)

1081 VARNUM AVE, Lowell, MA 01854

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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. David H Tsai M.d. 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 Reassignments

Medicare enrollment records show David Tsai reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lahey Clinic, Inc.

13 mi

Internal Medicine

41 MALL RD, LAHEY CLINIC
Burlington, MA 01805

Reassigned Medicare billing, Massachusetts enrollment
Also billed through NPI 1063447316 (Massachusetts)
1,574 clinicians in this Medicare group

NPI 1538194980 (781) 744-8000

Essex Inpatient Physicians, PC

13 mi

Hospitalist

795 TURNPIKE ST STE 201-202
North Andover, MA 01845

Reassigned Medicare billing, Massachusetts enrollment
4 clinicians in this Medicare group

NPI 1104004795 (978) 377-8381

Emerson Practice Associates, Inc.

14 mi

Internal Medicine

133 OLD ROAD TO NINE ACRE CORNER
Concord, MA 01742

Reassigned Medicare billing, Massachusetts enrollment
451 clinicians in this Medicare group

NPI 1508020199 (978) 287-3022

Hebrew Rehabilitation Center

27 mi

Long Term Care Hospital

1200 CENTRE ST
Boston, MA 02131

Reassigned Medicare billing, Massachusetts enrollment
59 clinicians in this Medicare group

NPI 1437155967 (617) 325-8000

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01854 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

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

Most-billed visit code 99214

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 4

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

SARA RILEY OTR/L

Occupational Therapist

1081 VARNUM AVE
LOWELL, MA 01854

Middlesex County (978) 427-6810

KAREN ANNE MAY RD; LDN

Dietitian, Registered

1081 VARNUM AVE
LOWELL, MA 01854

Middlesex County (978) 427-6810

DR. JULIE ROMBAUT O'CONNOR M.D.

Family Medicine

1081 VARNUM AVE
LOWELL, MA 01854

Middlesex County (978) 427-6810

BRITTANY COLLINS

Nurse Practitioner (Family)

1081 VARNUM AVE
LOWELL, MA 01854

Middlesex County (978) 427-6810

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 David Tsai's NPI number?

The NPI number for David Tsai is 1386673713. It was assigned to this individual provider in the NPPES registry on June 30, 2006.

Where is David Tsai located?

David Tsai practices at 1081 Varnum Ave, Lowell, MA 01854. The listed phone number is (978) 427-6810.

What is David Tsai's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is David Tsai enrolled in Medicare?

Yes. David Tsai is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for David Tsai's services?

According to the CMS Revalidation Reassignment List (October 2026 release), David Tsai reassigns Medicare benefits to 4 organizations: Lahey Clinic, Inc. (Burlington, MA), Essex Inpatient Physicians, PC (North Andover, MA), Emerson Practice Associates, Inc. (Concord, MA) and Hebrew Rehabilitation Center (Boston, MA). 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 David Tsai'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 David Tsai was last updated on December 9, 2021. 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.