DIANA PHAM, MD
Undersea and Hyperbaric Medicine (Emergency Medicine) Physician in CHARLOTTESVILLE, Virginia. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
DIANA PHAM, MD filed 215 Medicare Part D claims in 2023 as a Undersea and Hyperbaric Medicine (Emergency Medicine) Physician in CHARLOTTESVILLE, Virginia, prescribing 73% generic.
- 215
- Part D claims, 2023
- 73%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
DIANA PHAM, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
215 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
DIANA PHAM, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about DIANA PHAM, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Virginia
How Undersea and Hyperbaric Medicine (Emergency Medicine) Physician compares to other specialties among Virginia providers
Undersea and Hyperbaric Medicine (Emergency Medicine) Physician share within Virginia
Undersea and Hyperbaric Medicine (Emergency Medicine) Physician is one of the more visible NUCC categories in Virginia
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Undersea and Hyperbaric Medicine (Emergency Medicine) Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Undersea and Hyperbaric Medicine (Emergency Medicine) Physician ABMS/AOA estimate
Est. board-certified rate (Undersea and Hyperbaric Medicine (Emergency Medicine) Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Undersea and Hyperbaric Medicine (Emergency Medicine) Physician US NPIs
Specialty board-certified rate — Undersea and Hyperbaric Medicine (Emergency Medicine) Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
DIANA PHAM, MD appears in the CMS NPPES registry as a Undersea and Hyperbaric Medicine (Emergency Medicine) Physician provider holding MD credentials at 1215 LEE ST, CHARLOTTESVILLE, VA, 22908, with a listed phone of (434) 924-3627. NPI 1912437773 was issued on 06/14/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PHAM 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 215 prescription claims written by this provider, covering 125 Medicare beneficiaries and totaling roughly $54K in drug spend, split 27% brand-name and 73% 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.
Undersea and Hyperbaric Medicine (Emergency Medicine) Physician is a narrow specialty nationwide, with 201 enrolled providers across 43 states and an average of 367 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 | 1912437773 |
|---|---|
| Specialty | Undersea and Hyperbaric Medicine (Emergency Medicine) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/14/2017 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm DIANA PHAM, MD's current license status, disciplinary history, and board certifications with the Virginia Board of Medicine in Virginia before relying on this page for a clinical or care decision.
How we sourced this profile
Hospital and facility affiliations
Facilities where DIANA PHAM, MD 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.
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 DIANA PHAM, MD. Source: openpaymentsdata.cms.gov.
Total received
$651
Largest payer
Smith+Nephew, 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 · Above average
27% brand-name claims vs 73% generic, on 215 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.
Prescribing Breakdown
- 30-Day Fills
- 216
- Total Day Supply
- 3,752
- Brand vs Generic
- 27% brand / 73% generic
- Brand Drug Cost
- $50K
- Generic Drug Cost
- $4K
- Antibiotic Claims
- 146
Patient Demographics
- Average Patient Age
- 73.3 years
- Avg HCC Risk Score
- 3.09
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 20, 65-74: 42, 75-84: 41, 85+: 22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What DIANA PHAM, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Santyl
Santyl
52 claims
- Doxycycline Monohy…
Doxycycline Monohydrate
26 claims
- Cephalexin
Cephalexin
24 claims
- Ciprofloxacin Hcl
Ciprofloxacin Hcl
22 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
21 claims
- Clindamycin Hcl 20
Clindamycin Hcl
20 claims
| Drug | Claims |
|---|---|
| Santyl Collagenase Clostridium Hist. | 52 |
| Doxycycline Monohydrate | 26 |
| Cephalexin | 24 |
| Ciprofloxacin Hcl | 22 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 21 |
| Clindamycin Hcl | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Undersea and Hyperbaric Medicine (Emergency Medicine) Physician Overview
How DIANA PHAM, MD fits within the Undersea and Hyperbaric Medicine (Emergency Medicine) Physician landscape nationally.
DIANA PHAM, MD's 215 claims are below the specialty average of 367.
Nearby Undersea and Hyperbaric Medicine (Emergency Medicine) Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as PHAM.
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Frequently Asked Questions
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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