NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1932162385 M.D.
Verify on CMS → David Dang, M.D.
Rheumatology Physician in Garden Grove, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,377 in Rheumatology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
10K
Medicare Part D claims · 925 beneficiaries · Rheumatology Physician avg: 2K
Industry payments
$6.1K
220 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
David Dang, M.D. filed 10,089 Medicare Part D claims in 2024 as a Rheumatology Physician in Garden Grove, California.
- 10K
- Part D claims, 2024
- $6.1K
- industry payments (Sunshine Act)
- ≥98th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about David Dang, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1932162385), first enumerated 04/07/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 10,089 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$6.1K in reported industry payments (220 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not David Dang, M.D.'s individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1932162385 · Rheumatology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-HEAVY · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1932162385
- ENUM-LEGACY 2006
- TAX-MID 6K Rheumatology Physician
- RX-HEAVY 10K claims
- BOOK-LIGHT 719 in California
- PHOTO-ENUM Allan Goldman · 2006
David Dang, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
10,089 ≥ 98th percentile 98% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
David Dang, M.D. 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 David Dang, M.D.?
Quality data not reportedPrimary specialty
Rheumatology Physician
Medicare Part D claims
10,089 390% vs specialty avg
Specialty distribution in California
How Rheumatology Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Rheumatology Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1932162385 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/07/2006 |
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 David Dang, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$6.1K
Largest payer
ABBVIE 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.
License & disciplinary context - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to David Dang, M.D.. To verify David Dang, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
10,089
Total Claims
$10.4M
Total Drug Cost
925
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 15,036.233
- Total Day Supply
- 437,837
- Generic Drug Cost
- $159K
- Opioid Claims
- 767 (7.6% rate)
- Antibiotic Claims
- 27
Patient Demographics
- Average Patient Age
- 74.4 years
- Avg HCC Risk Score
- 1.48
- Gender Split
- 71% female / 29% male
- Age Distribution
- <65: 43, 65-74: 443, 75-84: 354, 85+: 85
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What David Dang, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Gabapentin
Gabapentin
1,101 claims
- Celecoxib
Celecoxib
920 claims
- Famotidine
Famotidine
818 claims
- Tramadol Hcl
Tramadol Hcl
641 claims
- Methotrexate
Methotrexate
505 claims
- Diclofenac Sodium 409
Diclofenac Sodium
409 claims
- Rinvoq 404
Rinvoq
404 claims
- Hydroxychloroquine… 402
Hydroxychloroquine Sulfate
402 claims
| Drug | Claims |
|---|---|
| Gabapentin | 1,101 |
| Celecoxib | 920 |
| Famotidine | 818 |
| Tramadol Hcl | 641 |
| Methotrexate Methotrexate Sodium | 505 |
| Diclofenac Sodium | 409 |
| Rinvoq Upadacitinib | 404 |
| Hydroxychloroquine Sulfate | 402 |
| Enbrel Sureclick Etanercept | 372 |
| Allopurinol | 307 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How David Dang, M.D. fits within the Rheumatology Physician landscape nationally.
6,377
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,058
Avg Claims per Provider
David Dang, M.D.'s 10,089 claims are above the specialty average of 2,058.
Nationwide Rheumatology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Dang, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Rheumatology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Dang.
One of 719 Rheumatology Physician providers enrolled in California, 5 are shown here.
Dr. Thomas Abel
MD
Monte Sereno, CA
Dr. Thomas Adamson
M.D.
San Diego, CA
Dr. Sana Afroz
MD
Moreno Valley, CA
Dr. Atul Agrawal
MD
Antioch, CA
Dr. Bikramjit Ahluwalia
MD
Apple Valley, CA
Compare Rheumatology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is David Dang, M.D.'s specialty? ▼
David Dang, M.D. specializes in Rheumatology Physician and practices in Garden Grove, California. Credentials: M.D..
How much does David Dang, M.D. prescribe under Medicare Part D? ▼
In 2024, David Dang, M.D. wrote 10,089 Medicare Part D claims totaling $10.4M in drug costs for 925 beneficiaries.
Where is David Dang, M.D. located? ▼
David Dang, M.D. is located at 13872 HARBOR BLVD, Garden Grove, CA, 92843. Phone: (714) 210-1300.
What is David Dang, M.D.'s NPI number? ▼
David Dang, M.D.'s National Provider Identifier (NPI) is 1932162385, issued on 04/07/2006.
Does David Dang, M.D. prescribe opioids? ▼
Yes, David Dang, M.D. had 767 opioid claims in 2024 with an opioid prescribing rate of 7.6%.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,377 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,058 Medicare Part D claims per year.
What drugs does David Dang, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, David Dang, M.D.'s most frequently prescribed drugs include Gabapentin, Celecoxib, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Dang, M.D. accept Medicare? ▼
David Dang, M.D. appears in CMS Medicare data with 10,089 Part D claims and 925 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Dang, M.D.'s credentials? ▼
David Dang, M.D.'s NPI is 1932162385 with credentials M.D.. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.