NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1639442239 M.D.
Verify on CMS → Mandy Byers, M.D.
Geriatric Medicine (Internal Medicine) Physician in Omaha, Nebraska.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,215 in Geriatric Medicine (Internal 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
903
Medicare Part D claims · 107 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
92%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Mandy Byers, M.D. filed 903 Medicare Part D claims in 2024 as a Geriatric Medicine (Internal Medicine) Physician in Omaha, Nebraska, prescribing 92% generic.
- 903
- Part D claims, 2024
- 92%
- generic prescribing
- ≥74th
- 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.
Federal trust snapshot
What official records show about Mandy Byers, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1639442239), first enumerated 02/14/2012.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 903 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1639442239 · Geriatric Medicine (Internal Medicine) Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1639442239
- ENUM-MID 2012
- TAX-NARROW 4,215
- RX-LIGHT 903
- BOOK-THIN 17 in Nebraska
- PHOTO-ENUM Ian Neel, M.D. · 2012
Mandy Byers, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
903 ≥ 74th percentile 74% of 1,416,883 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 · 2024
◑
Board-eligible specialty (heuristic, not verified)
Mandy Byers, 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 Mandy Byers, M.D.?
Quality data not reportedPrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
903 80% vs specialty avg
Specialty distribution in Nebraska
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Nebraska 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 Geriatric Medicine (Internal 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 | 1639442239 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 02/14/2012 |
Brand vs generic prescribing mix · Generic-heavy
Mandy Byers, M.D. - brand share 7.0%
Geriatric Medicine (Internal Medicine) Physician average
7% brand-name claims vs 92% generic, on 903 2024 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 2024.
903
Total Claims
$47K
Total Drug Cost
107
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,490.333
- Total Day Supply
- 43,243
- Brand vs Generic
- 7% brand / 92% generic
- Brand Drug Cost
- $25K
- Generic Drug Cost
- $21K
Patient Demographics
- Average Patient Age
- 78.5 years
- Avg HCC Risk Score
- 1.43
- Gender Split
- 74% female / 26% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mandy Byers, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amlodipine Besylate
Amlodipine Besylate
66 claims
- Atorvastatin Calcium
Atorvastatin Calcium
58 claims
- Duloxetine Hcl
Duloxetine Hcl
36 claims
- Gabapentin
Gabapentin
35 claims
- Levothyroxine Sodium
Levothyroxine Sodium
32 claims
- Tamsulosin Hcl
Tamsulosin Hcl
31 claims
- Lisinopril
Lisinopril
27 claims
- Potassium Chloride 26
Potassium Chloride
26 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 66 |
| Atorvastatin Calcium | 58 |
| Duloxetine Hcl | 36 |
| Gabapentin | 35 |
| Levothyroxine Sodium | 32 |
| Tamsulosin Hcl | 31 |
| Lisinopril | 27 |
| Potassium Chloride | 26 |
| Metoprolol Succinate | 25 |
| Metformin Hcl | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Internal Medicine) Physician in NE →
All providers in Nebraska →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Mandy Byers, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,215
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,420
Avg Claims per Provider
Mandy Byers, M.D.'s 903 claims are below the specialty average of 4,420.
Nationwide Geriatric Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Byers, both outside Nebraska so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2012)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Nebraska
Other clinicians with the same primary specialty enrolled in Nebraska, drawn from the same CMS NPPES roster as Byers.
One of 17 Geriatric Medicine (Internal Medicine) Physician providers enrolled in Nebraska, 5 are shown here.
Frequently Asked Questions
What is Mandy Byers, M.D.'s specialty? ▼
Mandy Byers, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Omaha, Nebraska. Credentials: M.D..
How much does Mandy Byers, M.D. prescribe under Medicare Part D? ▼
In 2024, Mandy Byers, M.D. wrote 903 Medicare Part D claims totaling $47K in drug costs for 107 beneficiaries.
Where is Mandy Byers, M.D. located? ▼
Mandy Byers, M.D. is located at 730 S 38TH AVE, Omaha, NE, 68105. Phone: (402) 559-9600.
What is Mandy Byers, M.D.'s NPI number? ▼
Mandy Byers, M.D.'s National Provider Identifier (NPI) is 1639442239, issued on 02/14/2012.
Does Mandy Byers, M.D. prescribe more brand-name or generic drugs? ▼
Mandy Byers, M.D.'s prescribing is 7% brand-name and 92% generic drugs by claim count, with $25K in brand drug costs.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,215 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,420 Medicare Part D claims per year.
What drugs does Mandy Byers, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Mandy Byers, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Duloxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mandy Byers, M.D. accept Medicare? ▼
Mandy Byers, M.D. appears in CMS Medicare data with 903 Part D claims and 107 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mandy Byers, M.D.'s credentials? ▼
Mandy Byers, M.D.'s NPI is 1639442239 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.