2026 NPPES data Occupational Therapist NPI 1053524454 PA-C
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Melissa Tsang, PA-C

Occupational Therapist in Columbia, Maryland. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
419
Medicare Part D claims · 32 beneficiaries · Occupational Therapist avg: 527
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$107.77
6 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

Melissa Tsang, PA-C filed 419 Medicare Part D claims in 2023 as a Occupational Therapist in Columbia, Maryland, prescribing 95% generic.

419
Part D claims, 2023
95%
generic prescribing
$107.77
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

Melissa Tsang, PA-C's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

419 Top 38% higher than 62% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about Melissa Tsang, PA-C?

Quality data not reported

NPI registry status

Active

Issued 05/08/2007

NPI 1053524454

Primary specialty

Occupational Therapist

High-volume

128,802 US NPIs in this specialty

Medicare Part D claims

419 20% vs specialty avg

2023 prescription claims

Specialty avg: 527

Specialty distribution in Maryland

How Occupational Therapist compares to other specialties among Maryland providers

Maryland providers

Occupational Therapist share within Maryland

1. Occupational Therapist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Occupational Therapist share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Occupational Therapist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Occupational Therapist ABMS/AOA estimate

Est. board-certified rate (Occupational Therapist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Occupational Therapist) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Melissa Tsang, PA-C appears in the CMS NPPES registry as a Occupational Therapist provider holding PA-C credentials at 9520 BERGER RD STE 203, Columbia, MD, 21046, with a listed phone of (410) 823-6408. NPI 1053524454 was issued on 05/08/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Tsang most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 419 prescription claims written by this provider, covering 32 Medicare beneficiaries and totaling roughly $26K in drug spend, split 5% brand-name and 95% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Occupational Therapist is a high-volume specialty nationwide, with 128,802 enrolled providers across 55 states and an average of 527 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

9520 BERGER RD STE 203
Columbia, MD 21046

Provider Details

NPI 1053524454
Specialty Occupational Therapist
Credentials PA-C
Gender Female
NPI Issued 05/08/2007

Hospital and facility affiliations

Facilities where Melissa Tsang, PA-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Psych Associates OF Maryland LLC
Towson, MD

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Melissa Tsang, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$108

Largest payer

ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

Melissa Tsang, PA-C — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 419 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

419
Total Claims
$26K
Total Drug Cost
32
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
586
Total Day Supply
17,162
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$16K
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
60.9 years
Avg HCC Risk Score
1.42
Gender Split
66% female / 34% male
Age Distribution
<65: 16, 65-74: 13, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Melissa Tsang, PA-C prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Quetiapine Fumarate
46
Clonazepam
38
Sertraline Hcl
23
Alprazolam
18
Buspirone Hcl
18
Duloxetine Hcl
18
Venlafaxine Hcl Er
Venlafaxine Hcl
17
Trazodone Hcl
14
Bupropion Xl
Bupropion Hcl
13
Aripiprazole
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Occupational Therapist Overview

How Melissa Tsang, PA-C fits within the Occupational Therapist landscape nationally.

128,802
Occupational Therapist Providers in US
55
States with Occupational Therapist
527
Avg Claims per Provider

Melissa Tsang, PA-C's 419 claims are below the specialty average of 527.

Nearby Occupational Therapist Providers in Maryland

Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Tsang.

Compare Occupational Therapist nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Maryland medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Occupational Therapist peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Melissa Tsang, PA-C's specialty?
Melissa Tsang, PA-C specializes in Occupational Therapist and practices in Columbia, Maryland. Credentials: PA-C.
How much does Melissa Tsang, PA-C prescribe under Medicare Part D?
In 2023, Melissa Tsang, PA-C wrote 419 Medicare Part D claims totaling $26K in drug costs for 32 beneficiaries.
Where is Melissa Tsang, PA-C located?
Melissa Tsang, PA-C is located at 9520 BERGER RD STE 203, Columbia, MD, 21046. Phone: (410) 823-6408.
What is Melissa Tsang, PA-C's NPI number?
Melissa Tsang, PA-C's National Provider Identifier (NPI) is 1053524454, issued on 05/08/2007.
Does Melissa Tsang, PA-C prescribe more brand-name or generic drugs?
Melissa Tsang, PA-C's prescribing is 5% brand-name and 95% generic drugs by claim count, with $16K in brand drug costs.
How many Occupational Therapist providers are there in the US?
There are 128,802 Occupational Therapist providers across 55 states in the US. The average Occupational Therapist provider writes 527 Medicare Part D claims per year.
What drugs does Melissa Tsang, PA-C prescribe most often?
Based on 2023 Medicare Part D data, Melissa Tsang, PA-C's most frequently prescribed drugs include Quetiapine Fumarate, Clonazepam, Sertraline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Melissa Tsang, PA-C accept Medicare?
Melissa Tsang, PA-C appears in CMS Medicare data with 419 Part D claims and 32 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Melissa Tsang, PA-C's credentials?
Melissa Tsang, PA-C's NPI is 1053524454 with credentials PA-C. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology