NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1043491988 M.D.
Verify on CMS → David Tom, M.D.
Anesthesiology Physician in Sun City, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 56,432 in 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
236
Medicare Part D claims · 129 beneficiaries · Anesthesiology Physician avg: 860
Industry payments
$479.88
4 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Tom, M.D. filed 236 Medicare Part D claims in 2023 as an Anesthesiology Physician in Sun City, Arizona.
- 236
- Part D claims, 2023
- $479.88
- 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.
David Tom, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
236 49th percentile higher than 49% of 1,370,886 prescribers
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)
David Tom, 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 Tom, M.D.?
Quality data not reportedPrimary specialty
Anesthesiology Physician
Medicare Part D claims
236 73% vs specialty avg
Specialty distribution in Arizona
How Anesthesiology Physician compares to other specialties among Arizona 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 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).
David Tom, M.D. appears in the CMS NPPES registry as an Anesthesiology Physician provider holding M.D. credentials at 13203 N 103RD AVE STE H5, Sun City, AZ, 85351, with a listed phone of (623) 777-4747. NPI 1043491988 was issued on 11/20/2007.
Medicare Part D records for calendar year 2023 show 236 prescription claims written by this provider, covering 129 Medicare beneficiaries and totaling roughly $4K in drug spend, with an opioid prescribing rate of 61.0%.
Anesthesiology Physician is a high-volume specialty nationwide, with 56,432 enrolled providers across 56 states and an average of 860 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
Provider Details
| NPI | 1043491988 |
|---|---|
| Specialty | Anesthesiology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/20/2007 |
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 Tom, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$480
Largest payer
Abbott Laboratories
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
236
Total Claims
$4K
Total Drug Cost
129
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 255
- Total Day Supply
- 6,699
- Generic Drug Cost
- $4K
- Opioid Claims
- 144 (61.0% rate)
Patient Demographics
- Average Patient Age
- 73.9 years
- Avg HCC Risk Score
- 1.30
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Tom, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
67 claims
- Gabapentin
Gabapentin
44 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
36 claims
- Tramadol Hcl
Tramadol Hcl
32 claims
- Tizanidine Hcl 17
Tizanidine Hcl
17 claims
- Cyclobenzaprine Hcl 11
Cyclobenzaprine Hcl
11 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 67 |
| Gabapentin | 44 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 36 |
| Tramadol Hcl | 32 |
| Tizanidine Hcl | 17 |
| Cyclobenzaprine Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Anesthesiology Physician Overview
How David Tom, M.D. fits within the Anesthesiology Physician landscape nationally.
56,432
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider
David Tom, M.D.'s 236 claims are below the specialty average of 860.
Nearby Anesthesiology Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Tom.
Dr. Mohammad Abbasian
MD
Phoenix, AZ
Dr. Shelley Abdel-Sayed
M.D.
Phoenix, AZ
Dr. Paul Addessi
MD
Mesa, AZ
Dr. Gbadebo Adebayo
M.D.
Phoenix, AZ
Dr. Asmerom Adhanom
D.O.
Yuma, AZ
Compare Anesthesiology Physician 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 Arizona medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Anesthesiology Physician 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.
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Frequently Asked Questions
What is David Tom, M.D.'s specialty? ▼
David Tom, M.D. specializes in Anesthesiology Physician and practices in Sun City, Arizona. Credentials: M.D..
How much does David Tom, M.D. prescribe under Medicare Part D? ▼
In 2023, David Tom, M.D. wrote 236 Medicare Part D claims totaling $4K in drug costs for 129 beneficiaries.
Where is David Tom, M.D. located? ▼
David Tom, M.D. is located at 13203 N 103RD AVE STE H5, Sun City, AZ, 85351. Phone: (623) 777-4747.
What is David Tom, M.D.'s NPI number? ▼
David Tom, M.D.'s National Provider Identifier (NPI) is 1043491988, issued on 11/20/2007.
Does David Tom, M.D. prescribe opioids? ▼
Yes, David Tom, M.D. had 144 opioid claims in 2023 with an opioid prescribing rate of 61.0%.
How many Anesthesiology Physician providers are there in the US? ▼
There are 56,432 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does David Tom, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, David Tom, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Tom, M.D. accept Medicare? ▼
David Tom, M.D. appears in CMS Medicare data with 236 Part D claims and 129 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Tom, M.D.'s credentials? ▼
David Tom, M.D.'s NPI is 1043491988 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 (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
Compiled from official public sources by the PlainDoctor editorial team.
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.