NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1629365358 D,I,
Verify on CMS → Joanna Bayles, D,I,
Family Medicine Physician in Jackson, Mississippi.
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
740
Medicare Part D claims · 182 beneficiaries · Family Medicine Physician avg: 3K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Joanna Bayles, D,I, filed 740 Medicare Part D claims in 2023 as a Family Medicine Physician in Jackson, Mississippi.
- 740
- Part D claims, 2023
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.
Joanna Bayles, D,I,'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
740 Top 29% higher than 71% 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
◑
Board-eligible specialty (heuristic, not verified)
Joanna Bayles, D,I, 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 Joanna Bayles, D,I,?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
740 78% vs specialty avg
Specialty distribution in Mississippi
How Family Medicine Physician compares to other specialties among Mississippi 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).
Joanna Bayles, D,I, appears in the CMS NPPES registry as a Family Medicine Physician provider holding D,I, credentials at 878 LAKELAND DR, Jackson, MS, 39216, with a listed phone of (601) 984-6800. NPI 1629365358 was issued on 07/01/2011.
Medicare Part D records for calendar year 2023 show 740 prescription claims written by this provider, covering 182 Medicare beneficiaries and totaling roughly $56K in drug spend.
Family Medicine Physician is a high-volume specialty nationwide, with 147,760 enrolled providers across 56 states and an average of 3,418 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 | 1629365358 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | D,I, |
| Gender | Female |
| NPI Issued | 07/01/2011 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
740
Total Claims
$56K
Total Drug Cost
182
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,754
- Total Day Supply
- 52,303
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 69.3 years
- Avg HCC Risk Score
- 1.31
- Gender Split
- 71% female / 29% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Joanna Bayles, D,I, prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
39 claims
- Metformin Hcl
Metformin Hcl
35 claims
- Omeprazole
Omeprazole
34 claims
- Losartan Potassium
Losartan Potassium
33 claims
- Levothyroxine Sodium
Levothyroxine Sodium
30 claims
- Lisinopril
Lisinopril
29 claims
- Atorvastatin Calcium
Atorvastatin Calcium
26 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
24 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 39 |
| Metformin Hcl | 35 |
| Omeprazole | 34 |
| Losartan Potassium | 33 |
| Levothyroxine Sodium | 30 |
| Lisinopril | 29 |
| Atorvastatin Calcium | 26 |
| Rosuvastatin Calcium | 24 |
| Metoprolol Succinate | 21 |
| Pantoprazole Sodium | 21 |
* 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 Joanna Bayles, D,I, 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
Joanna Bayles, D,I,'s 740 claims are below the specialty average of 3,418.
Nearby Family Medicine Physician Providers in Mississippi
Other clinicians with the same primary specialty enrolled in Mississippi, drawn from the same CMS NPPES roster as Bayles.
Dr. Rolando Abangan
M.D.
Meridian, MS
Dr. Abdu Mohamed Abdallah Ahmed
MD
Jackson, MS
Dr. Kevin Abel
M.D.
Baldwyn, MS
Dr. George Abraham
MD
Vicksburg, MS
Dr. Audie Adams
M.D.
Senatobia, MS
Compare Family Medicine Physician nationally: see state-by-state distribution →
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 Mississippi medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Mississippi
Frequently Asked Questions
What is Joanna Bayles, D,I,'s specialty? ▼
Joanna Bayles, D,I, specializes in Family Medicine Physician and practices in Jackson, Mississippi. Credentials: D,I,.
How much does Joanna Bayles, D,I, prescribe under Medicare Part D? ▼
In 2023, Joanna Bayles, D,I, wrote 740 Medicare Part D claims totaling $56K in drug costs for 182 beneficiaries.
Where is Joanna Bayles, D,I, located? ▼
Joanna Bayles, D,I, is located at 878 LAKELAND DR, Jackson, MS, 39216. Phone: (601) 984-6800.
What is Joanna Bayles, D,I,'s NPI number? ▼
Joanna Bayles, D,I,'s National Provider Identifier (NPI) is 1629365358, issued on 07/01/2011.
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 Joanna Bayles, D,I, prescribe most often? ▼
Based on 2023 Medicare Part D data, Joanna Bayles, D,I,'s most frequently prescribed drugs include Amlodipine Besylate, Metformin Hcl, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joanna Bayles, D,I, accept Medicare? ▼
Joanna Bayles, D,I, appears in CMS Medicare data with 740 Part D claims and 182 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joanna Bayles, D,I,'s credentials? ▼
Joanna Bayles, D,I,'s NPI is 1629365358 with credentials D,I,. 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.
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.