NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1770946394 D.O., M.P.H.
Verify on CMS → Alexa Namba, D.O., M.P.H.
Family Medicine Physician in Durham, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine 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
6K
Medicare Part D claims · 529 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 10% 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
Alexa Namba, D.O., M.P.H. filed 6,077 Medicare Part D claims in 2023 as a Family Medicine Physician in Durham, North Carolina, prescribing 89% generic.
- 6K
- Part D claims, 2023
- 89%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥95th
- 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 1770946394 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1770946394
- ENUM-MID 2016
- TAX-MEGA 148K Family Medicine
- RX-MID 6,077
- BOOK-LIGHT 4,653 in North Carolina
- PHOTO-ENUM Vishal Goyal · 2016
Alexa Namba, D.O., M.P.H.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
6,077 ≥ 95th percentile 95% 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)
Alexa Namba, D.O., M.P.H. 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 Alexa Namba, D.O., M.P.H.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
6,077 78% vs specialty avg
Specialty distribution in North Carolina
How Family Medicine Physician compares to other specialties among North Carolina 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 Family Medicine 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 | 1770946394 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | D.O., M.P.H. |
| Gender | Female |
| NPI Issued | 03/31/2016 |
Hospital and facility affiliations
Facilities where Alexa Namba, D.O., M.P.H. 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.
Duke University Affiliated Physicians, Inc.
Raleigh, NC
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 · Typical
Alexa Namba, D.O., M.P.H. - brand share 10.0%
Family Medicine Physician average
10% brand-name claims vs 89% generic, on 6,077 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.
6,077
Total Claims
$530K
Total Drug Cost
529
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 12,338
- Total Day Supply
- 359,616
- Brand vs Generic
- 10% brand / 89% generic
- Brand Drug Cost
- $414K
- Generic Drug Cost
- $111K
- Opioid Claims
- 156 (2.6% rate)
- Antibiotic Claims
- 107
Patient Demographics
- Average Patient Age
- 70.5 years
- Avg HCC Risk Score
- 1.54
- Gender Split
- 71% female / 29% male
- Age Distribution
- <65: 106, 65-74: 242, 75-84: 141, 85+: 40
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alexa Namba, D.O., M.P.H. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
297 claims
- Atorvastatin Calcium
Atorvastatin Calcium
245 claims
- Hydrochlorothiazide
Hydrochlorothiazide
158 claims
- Gabapentin
Gabapentin
154 claims
- Levothyroxine Sodium
Levothyroxine Sodium
146 claims
- Pantoprazole Sodium
Pantoprazole Sodium
142 claims
- Lisinopril
Lisinopril
139 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
136 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 297 |
| Atorvastatin Calcium | 245 |
| Hydrochlorothiazide | 158 |
| Gabapentin | 154 |
| Levothyroxine Sodium | 146 |
| Pantoprazole Sodium | 142 |
| Lisinopril | 139 |
| Rosuvastatin Calcium | 136 |
| Losartan Potassium | 134 |
| Omeprazole | 122 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Alexa Namba, D.O., M.P.H. fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Alexa Namba, D.O., M.P.H.'s 6,077 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Namba, both outside North Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2016)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Namba.
One of 4,653 Family Medicine Physician providers enrolled in North Carolina, 5 are shown here.
Dr. Alvin Abaqueta
M.D.
Charlotte, NC
Dr. Atif Abbasi
M.D
Greenville, NC
Dr. Jennifer Abbott
MD
Asheville, NC
Dr. Linda Abbott
FNP
Edenton, NC
Dr. Thomas Abbott
MD
Winston-Salem, NC
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Alexa Namba, D.O., M.P.H.'s specialty? ▼
Alexa Namba, D.O., M.P.H. specializes in Family Medicine Physician and practices in Durham, North Carolina. Credentials: D.O., M.P.H..
How much does Alexa Namba, D.O., M.P.H. prescribe under Medicare Part D? ▼
In 2023, Alexa Namba, D.O., M.P.H. wrote 6,077 Medicare Part D claims totaling $530K in drug costs for 529 beneficiaries.
Where is Alexa Namba, D.O., M.P.H. located? ▼
Alexa Namba, D.O., M.P.H. is located at 2301 ERWIN RD, Durham, NC, 27705. Phone: (919) 684-8111.
What is Alexa Namba, D.O., M.P.H.'s NPI number? ▼
Alexa Namba, D.O., M.P.H.'s National Provider Identifier (NPI) is 1770946394, issued on 03/31/2016.
Does Alexa Namba, D.O., M.P.H. prescribe more brand-name or generic drugs? ▼
Alexa Namba, D.O., M.P.H.'s prescribing is 10% brand-name and 89% generic drugs by claim count, with $414K in brand drug costs.
Does Alexa Namba, D.O., M.P.H. prescribe opioids? ▼
Yes, Alexa Namba, D.O., M.P.H. had 156 opioid claims in 2023 with an opioid prescribing rate of 2.6%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Alexa Namba, D.O., M.P.H. prescribe most often? ▼
Based on 2023 Medicare Part D data, Alexa Namba, D.O., M.P.H.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Hydrochlorothiazide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alexa Namba, D.O., M.P.H. accept Medicare? ▼
Alexa Namba, D.O., M.P.H. appears in CMS Medicare data with 6,077 Part D claims and 529 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alexa Namba, D.O., M.P.H.'s credentials? ▼
Alexa Namba, D.O., M.P.H.'s NPI is 1770946394 with credentials D.O., M.P.H.. 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.