2026 NPPES data Family Medicine Physician NPI 1629365358 D,I,
Verify on CMS →

JOANNA BAYLES, D,I,

Family Medicine Physician in JACKSON, Mississippi. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
740
Medicare Part D claims · 182 beneficiaries · Family Medicine Physician avg: 3K

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

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 reported

NPI registry status

Active

Issued 07/01/2011

NPI 1629365358

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

740 78% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Mississippi

How Family Medicine Physician compares to other specialties among Mississippi providers

Mississippi providers

Family Medicine Physician share within Mississippi

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within Mississippi

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BAYLES most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

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. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 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

878 LAKELAND DR
JACKSON, MS 39216

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

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
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.

147,640
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.

Compare Family Medicine Physician nationally: see state-by-state distribution →

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 147,640 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

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