2026 NPPES data Dermatology Physician NPI 1619942661 MBBS
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ARTHUR TONG, MBBS

Dermatology Physician in WALTHAM, Massachusetts. 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
316
Medicare Part D claims · 126 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ARTHUR TONG, MBBS filed 316 Medicare Part D claims in 2023 as a Dermatology Physician in WALTHAM, Massachusetts, prescribing 79% generic.

316
Part D claims, 2023
79%
generic prescribing

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.

ARTHUR TONG, MBBS's Medicare Part D volume vs every U.S. prescriber

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

316 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 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

Board-eligible specialty (heuristic — not verified)

ARTHUR TONG, MBBS practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about ARTHUR TONG, MBBS?

Quality data not reported

NPI registry status

Active

Issued 02/22/2006

NPI 1619942661

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

316 57% vs specialty avg

2023 prescription claims

Specialty avg: 729

Specialty distribution in Massachusetts

How Dermatology Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Dermatology Physician share within Massachusetts

1. Dermatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Dermatology Physician share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Dermatology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Dermatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Dermatology Physician) — 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).

ARTHUR TONG, MBBS appears in the CMS NPPES registry as a Dermatology Physician provider holding MBBS credentials at 40 SECOND AVE, WALTHAM, MA, 02451, with a listed phone of (781) 522-9000. NPI 1619942661 was issued on 02/22/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what TONG 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 316 prescription claims written by this provider, covering 126 Medicare beneficiaries and totaling roughly $128K in drug spend, split 21% brand-name and 79% 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.

Dermatology Physician is a mid-sized specialty nationwide, with 14,610 enrolled providers across 53 states and an average of 729 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

40 SECOND AVE
WALTHAM, MA 02451

Provider Details

NPI 1619942661
Specialty Dermatology Physician
Credentials MBBS
Gender Male
NPI Issued 02/22/2006

License & disciplinary context — Massachusetts BORIM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 — they are NOT specific to ARTHUR TONG, MBBS. To verify ARTHUR TONG, MBBS's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

ARTHUR TONG, MBBS — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 316 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.

316
Total Claims
$128K
Total Drug Cost
126
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
371
Total Day Supply
9,452
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$113K
Generic Drug Cost
$15K
Antibiotic Claims
20

Patient Demographics

Average Patient Age
75.0 years
Avg HCC Risk Score
0.97
Gender Split
56% female / 44% male
Age Distribution
<65: 11, 65-74: 42, 75-84: 55, 85+: 18

Top Prescribed Drugs (Medicare Part D)

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

What ARTHUR TONG, MBBS 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
Betamethasone Diprop Augmented
Betamethasone/Propylene Glyc
68
Hydrocortisone
25
Hydroxyzine Hcl
22
Clobetasol Propionate
20
Metronidazole
16
Betamethasone Dipropionate
14
Clindamycin Phosphate
14
Fluocinolone Acetonide
14
Halobetasol Propionate
11

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

Dermatology Physician Overview

How ARTHUR TONG, MBBS fits within the Dermatology Physician landscape nationally.

14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

ARTHUR TONG, MBBS's 316 claims are below the specialty average of 729.

Nearby Dermatology Physician Providers in Massachusetts

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

Compare Dermatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ARTHUR TONG, MBBS's specialty?
ARTHUR TONG, MBBS specializes in Dermatology Physician and practices in WALTHAM, Massachusetts. Credentials: MBBS.
How much does ARTHUR TONG, MBBS prescribe under Medicare Part D?
In 2023, ARTHUR TONG, MBBS wrote 316 Medicare Part D claims totaling $128K in drug costs for 126 beneficiaries.
Where is ARTHUR TONG, MBBS located?
ARTHUR TONG, MBBS is located at 40 SECOND AVE, WALTHAM, MA, 02451. Phone: (781) 522-9000.
What is ARTHUR TONG, MBBS's NPI number?
ARTHUR TONG, MBBS's National Provider Identifier (NPI) is 1619942661, issued on 02/22/2006.
Does ARTHUR TONG, MBBS prescribe more brand-name or generic drugs?
ARTHUR TONG, MBBS's prescribing is 21% brand-name and 79% generic drugs by claim count, with $113K in brand drug costs.
How many Dermatology Physician providers are there in the US?
There are 14,610 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does ARTHUR TONG, MBBS prescribe most often?
Based on 2023 Medicare Part D data, ARTHUR TONG, MBBS's most frequently prescribed drugs include Betamethasone Diprop Augmented, Hydrocortisone, Hydroxyzine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ARTHUR TONG, MBBS accept Medicare?
ARTHUR TONG, MBBS appears in CMS Medicare data with 316 Part D claims and 126 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ARTHUR TONG, MBBS's credentials?
ARTHUR TONG, MBBS's NPI is 1619942661 with credentials MBBS. 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