NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1558464990 MD
Verify on CMS → Tracy Phillips, MD
Obstetrics & Gynecology Physician in Washington, District of Columbia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 in Obstetrics & Gynecology 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
58
Medicare Part D claims · 18 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Tracy Phillips, MD filed 58 Medicare Part D claims in 2023 as an Obstetrics & Gynecology Physician in Washington, District of Columbia, prescribing 74% generic.
- 58
- Part D claims, 2023
- 74%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥0th
- 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 1558464990 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1558464990
- ENUM-LEGACY 2006
- TAX-MID 44K Obstetrics &
- RX-TRACE 58
- BOOK-THIN 231 in District of Columbia
- PHOTO-ENUM Edison Ruiz · 2006
Tracy Phillips, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
58 ≥ 0th percentile 0% 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 certification likely (heuristic, not verified)
Tracy Phillips, 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 Tracy Phillips, MD?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
58 68% vs specialty avg
Specialty distribution in District of Columbia
How Obstetrics & Gynecology Physician compares to other specialties among District of Columbia 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 Obstetrics & Gynecology 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 | 1558464990 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 09/07/2006 |
Hospital and facility affiliations
Facilities where Tracy Phillips, 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.
Sutter Bay Medical Foundation
Berkeley, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Above average
Tracy Phillips, MD - brand share 26.0%
Obstetrics & Gynecology Physician average
26% brand-name claims vs 74% generic, on 58 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.
58
Total Claims
$3K
Total Drug Cost
18
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 75
- Total Day Supply
- 1,805
- Brand vs Generic
- 26% brand / 74% generic
- Brand Drug Cost
- $995
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 69.6 years
- Avg HCC Risk Score
- 1.05
- Gender Split
- 100% female / 0% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Estradiol (Once Weekly) Estradiol | 13 |
| Lutera Levonorgestrel/Ethin.Estradiol | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Obstetrics & Gynecology Physician in DC →
All providers in District of Columbia →
Compare specialties →
Obstetrics & Gynecology Physician Overview
How Tracy Phillips, MD fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Tracy Phillips, MD's 58 claims are below the specialty average of 179.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Phillips, both outside District of Columbia 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 Obstetrics & Gynecology Physician Providers in District of Columbia
Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Phillips.
One of 231 Obstetrics & Gynecology Physician providers enrolled in District of Columbia, 5 are shown here.
Dr. Mary Abraham
MD
Washington, DC
Dr. Tara Abraham
M.D. MPH
Wahington, DC
Dr. Henry Adegbulugbe
MD
Washington, DC
Dr. Olanrewaju Adeyiga
MD
Washington, DC
Dr. Homa Ahmadzia
M.D. M.P.H.
Washington, DC
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Tracy Phillips, MD's specialty? ▼
Tracy Phillips, MD specializes in Obstetrics & Gynecology Physician and practices in Washington, District of Columbia. Credentials: MD.
How much does Tracy Phillips, MD prescribe under Medicare Part D? ▼
In 2023, Tracy Phillips, MD wrote 58 Medicare Part D claims totaling $3K in drug costs for 18 beneficiaries.
Where is Tracy Phillips, MD located? ▼
Tracy Phillips, MD is located at 5255 LOUGHBORO RD NW, Washington, DC, 20016. Phone: (202) 537-4000.
What is Tracy Phillips, MD's NPI number? ▼
Tracy Phillips, MD's National Provider Identifier (NPI) is 1558464990, issued on 09/07/2006.
Does Tracy Phillips, MD prescribe more brand-name or generic drugs? ▼
Tracy Phillips, MD's prescribing is 26% brand-name and 74% generic drugs by claim count, with $995 in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Tracy Phillips, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Tracy Phillips, MD's most frequently prescribed drugs include Estradiol (Once Weekly), Lutera. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tracy Phillips, MD accept Medicare? ▼
Tracy Phillips, MD appears in CMS Medicare data with 58 Part D claims and 18 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tracy Phillips, MD's credentials? ▼
Tracy Phillips, MD's NPI is 1558464990 with credentials MD. 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.