NPI registry status
Active
2026 NPPES data Pain Medicine (Anesthesiology) Physician NPI 1619084738 D.O.
Verify on CMS → Liem Trang, D.O.
Pain Medicine (Anesthesiology) Physician in Oklahoma City, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,032 in Pain Medicine (Anesthesiology) 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
5K
Medicare Part D claims · 315 beneficiaries · Pain Medicine (Anesthesiology) Physician avg: 2K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$883.69
16 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Liem Trang, D.O. filed 5,272 Medicare Part D claims in 2023 as a Pain Medicine (Anesthesiology) Physician in Oklahoma City, Oklahoma, prescribing 97% generic.
- 5K
- Part D claims, 2023
- 97%
- generic prescribing
- $883.69
- industry payments (Sunshine Act)
- ≥94th
- 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.
CMS NPPES provider registry desk
NPI 1619084738 · Pain Medicine (Anesthesiology) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1619084738
- ENUM-LEGACY 2006
- TAX-NARROW 4,032
- RX-MID 5,272
- BOOK-THIN 40 in Oklahoma
- PHOTO-ENUM Richard Bowe · 2006
Liem Trang, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,272 ≥ 94th percentile 94% of 1,370,886 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 · 2023
◑
Board-eligible specialty (heuristic, not verified)
Liem Trang, D.O. 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 Liem Trang, D.O.?
Quality data not reportedPrimary specialty
Pain Medicine (Anesthesiology) Physician
Medicare Part D claims
5,272 218% vs specialty avg
Specialty distribution in Oklahoma
How Pain Medicine (Anesthesiology) Physician compares to other specialties among Oklahoma 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 Pain Medicine (Anesthesiology) 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 | 1619084738 |
|---|---|
| Specialty | Pain Medicine (Anesthesiology) Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 08/24/2006 |
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 Liem Trang, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$884
Largest payer
Medtronic, 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
Liem Trang, D.O. - brand share 3.0%
Pain Medicine (Anesthesiology) Physician average
3% brand-name claims vs 97% generic, on 5,272 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.
5,272
Total Claims
$254K
Total Drug Cost
315
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,830
- Total Day Supply
- 171,553
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $111K
- Generic Drug Cost
- $143K
- Opioid Claims
- 2,940 (55.8% rate)
- Antibiotic Claims
- 25
Patient Demographics
- Average Patient Age
- 67.3 years
- Avg HCC Risk Score
- 1.43
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 118, 65-74: 115, 75-84: 63, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Liem Trang, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
1,062 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
656 claims
- Gabapentin
Gabapentin
554 claims
- Oxycodone Hcl 421
Oxycodone Hcl
421 claims
- Tizanidine Hcl 303
Tizanidine Hcl
303 claims
- Tramadol Hcl 273
Tramadol Hcl
273 claims
- Pregabalin 246
Pregabalin
246 claims
- Cyclobenzaprine Hcl 201
Cyclobenzaprine Hcl
201 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 1,062 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 656 |
| Gabapentin | 554 |
| Oxycodone Hcl | 421 |
| Tizanidine Hcl | 303 |
| Tramadol Hcl | 273 |
| Pregabalin | 246 |
| Cyclobenzaprine Hcl | 201 |
| Morphine Sulfate Er Morphine Sulfate | 180 |
| Baclofen | 128 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Pain Medicine (Anesthesiology) Physician in OK →
All providers in Oklahoma →
Compare specialties →
Pain Medicine (Anesthesiology) Physician Overview
How Liem Trang, D.O. fits within the Pain Medicine (Anesthesiology) Physician landscape nationally.
4,032
Pain Medicine (Anesthesiology) Physician Providers in US
53
States with Pain Medicine (Anesthesiology) Physician
1,657
Avg Claims per Provider
Liem Trang, D.O.'s 5,272 claims are above the specialty average of 1,657.
Nationwide Pain Medicine (Anesthesiology) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Trang, both outside Oklahoma 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 Pain Medicine (Anesthesiology) Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Trang.
One of 40 Pain Medicine (Anesthesiology) Physician providers enrolled in Oklahoma, 5 are shown here.
Dr. Stephen Andrade
M.D.
Oklahoma City, OK
Dr. Clinton Anthony
D.O.
Tulsa, OK
Dr. Sailesh Arulkumar
MBBS
Oklahoma City, OK
Dr. Emad Attallah-Wasif
MD
Tulsa, OK
Dr. Matthew Boeckman
MD
Del City, OK
Compare Pain Medicine (Anesthesiology) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Liem Trang, D.O.'s specialty? ▼
Liem Trang, D.O. specializes in Pain Medicine (Anesthesiology) Physician and practices in Oklahoma City, Oklahoma. Credentials: D.O..
How much does Liem Trang, D.O. prescribe under Medicare Part D? ▼
In 2023, Liem Trang, D.O. wrote 5,272 Medicare Part D claims totaling $254K in drug costs for 315 beneficiaries.
Where is Liem Trang, D.O. located? ▼
Liem Trang, D.O. is located at 3328 N CLASSEN BLVD, Oklahoma City, OK, 73118. Phone: (405) 524-5200.
What is Liem Trang, D.O.'s NPI number? ▼
Liem Trang, D.O.'s National Provider Identifier (NPI) is 1619084738, issued on 08/24/2006.
Does Liem Trang, D.O. prescribe more brand-name or generic drugs? ▼
Liem Trang, D.O.'s prescribing is 3% brand-name and 97% generic drugs by claim count, with $111K in brand drug costs.
Does Liem Trang, D.O. prescribe opioids? ▼
Yes, Liem Trang, D.O. had 2,940 opioid claims in 2023 with an opioid prescribing rate of 55.8%.
How many Pain Medicine (Anesthesiology) Physician providers are there in the US? ▼
There are 4,032 Pain Medicine (Anesthesiology) Physician providers across 53 states in the US. The average Pain Medicine (Anesthesiology) Physician provider writes 1,657 Medicare Part D claims per year.
What drugs does Liem Trang, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Liem Trang, D.O.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Liem Trang, D.O. accept Medicare? ▼
Liem Trang, D.O. appears in CMS Medicare data with 5,272 Part D claims and 315 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Liem Trang, D.O.'s credentials? ▼
Liem Trang, D.O.'s NPI is 1619084738 with credentials D.O.. 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 (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
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 May 2026.