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 4,161 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
6K
Medicare Part D claims · 255 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mandy Byers, M.D. filed 6,097 Medicare Part D claims in 2023 as a Geriatric Medicine (Internal Medicine) Physician in Omaha, Nebraska, prescribing 85% generic.
- 6K
- Part D claims, 2023
- 85%
- generic prescribing
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.
Mandy Byers, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
6,097 Top 5% higher than 95% 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
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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
6,097 37% 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).
Mandy Byers, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D. credentials at 730 S 38TH AVE, Omaha, NE, 68105, with a listed phone of (402) 559-9600. NPI 1639442239 was issued on 02/14/2012.
Medicare Part D records for calendar year 2023 show 6,097 prescription claims written by this provider, covering 255 Medicare beneficiaries and totaling roughly $461K in drug spend, split 14% brand-name and 85% generic by claim count, with an opioid prescribing rate of 2.9%.
Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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 | 1639442239 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 02/14/2012 |
Brand vs generic prescribing mix · Typical
Mandy Byers, M.D. - brand share 14.0%
Geriatric Medicine (Internal Medicine) Physician average
14% brand-name claims vs 85% generic, on 6,097 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.
6,097
Total Claims
$461K
Total Drug Cost
255
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 8,359
- Total Day Supply
- 217,860
- Brand vs Generic
- 14% brand / 85% generic
- Brand Drug Cost
- $326K
- Generic Drug Cost
- $130K
- Opioid Claims
- 179 (2.9% rate)
- Antibiotic Claims
- 113
Patient Demographics
- Average Patient Age
- 79.0 years
- Avg HCC Risk Score
- 1.87
- Gender Split
- 73% female / 27% male
- Age Distribution
- <65: 11, 65-74: 58, 75-84: 114, 85+: 72
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mandy Byers, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
345 claims
- Levothyroxine Sodium
Levothyroxine Sodium
273 claims
- Amlodipine Besylate
Amlodipine Besylate
220 claims
- Lisinopril
Lisinopril
176 claims
- Pantoprazole Sodium
Pantoprazole Sodium
175 claims
- Eliquis
Eliquis
168 claims
- Metoprolol Succinate
Metoprolol Succinate
153 claims
- Potassium Chloride 136
Potassium Chloride
136 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 345 |
| Levothyroxine Sodium | 273 |
| Amlodipine Besylate | 220 |
| Lisinopril | 176 |
| Pantoprazole Sodium | 175 |
| Eliquis Apixaban | 168 |
| Metoprolol Succinate | 153 |
| Potassium Chloride | 136 |
| Escitalopram Oxalate | 131 |
| Gabapentin | 131 |
* 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.
4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider
Mandy Byers, M.D.'s 6,097 claims are above the specialty average of 4,450.
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.
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 Nebraska medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Medicine (Internal Medicine) 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 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 2023, Mandy Byers, M.D. wrote 6,097 Medicare Part D claims totaling $461K in drug costs for 255 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 14% brand-name and 85% generic drugs by claim count, with $326K in brand drug costs.
Does Mandy Byers, M.D. prescribe opioids? ▼
Yes, Mandy Byers, M.D. had 179 opioid claims in 2023 with an opioid prescribing rate of 2.9%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does Mandy Byers, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mandy Byers, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. 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 6,097 Part D claims and 255 Medicare beneficiaries in 2023. 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 (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.