2026 NPPES data Emergency Medicine Physician NPI 1497044499 M.D.
Verify on CMS →

JOHN CHESTNUT, M.D.

Emergency Medicine Physician in BIRMINGHAM, Alabama. 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
226
Medicare Part D claims · 160 beneficiaries · Emergency Medicine Physician avg: 352
MIPS score
81.0128/100
▼ 2 pts below national avg 83.1 · [object Object]
Industry payments
$18.07
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JOHN CHESTNUT, M.D. is a Emergency Medicine Physician ([object Object]) practicing in BIRMINGHAM, Alabama with a Medicare Part D prescribing footprint of 226 claims across 160 beneficiaries . Their CMS MIPS Final Score of 81.0128/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $18.07 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JOHN CHESTNUT, M.D. reported a CMS MIPS final score of 81.0128 out of 100, below the 83.1 national average, and filed 226 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JOHN CHESTNUT, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

JOHN CHESTNUT, M.D. at a glance

Near national average

NPI registry status

Active

Issued 03/31/2011

NPI 1497044499

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

226 36% vs specialty avg

2023 prescription claims

Specialty avg: 352

MIPS final score

81.0128/100 2.0871999999999957% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Alabama

How Emergency Medicine Physician compares to other specialties among Alabama providers

Alabama providers

Emergency Medicine Physician share within Alabama

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

Medicare quality performance — MIPS

JOHN CHESTNUT, M.D.'s 2023 MIPS final score plotted against the Emergency Medicine Physician national average

Near national average
MIPS Final Score
81.0128/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Emergency Medicine Physician) — 81.0128/100 vs national avg 83.1

0%100%National avg83%81%
MIPS final score (Emergency Medicine Physician) — 81.0128/100 vs national avg 83.1

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).

JOHN CHESTNUT, M.D. is a Emergency Medicine Physician provider practicing in BIRMINGHAM, Alabama, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1497044499. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

JOHN CHESTNUT, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 619 19TH ST S, BIRMINGHAM, AL, 35249, with a listed phone of (205) 934-3640. NPI 1497044499 was issued on 03/31/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHESTNUT 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 226 prescription claims written by this provider, covering 160 Medicare beneficiaries and totaling roughly $4K in drug spend, with an opioid prescribing rate of 30.5%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.0128/100 for the 2023 performance year (Quality 71.0106), compared with the national average of 83.1.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

619 19TH ST S
BIRMINGHAM, AL 35249

Provider Details

NPI 1497044499
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 03/31/2011

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

81.0128
Final Score
Avg: 83.1
71.0106
Quality

Reporting: Group practice

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for JOHN CHESTNUT, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$18

Largest payer

Janssen Pharmaceuticals, Inc

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

226
Total Claims
$4K
Total Drug Cost
160
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
226
Total Day Supply
1,563
Generic Drug Cost
$2K
Opioid Claims
69 (30.5% rate)
Antibiotic Claims
44

Patient Demographics

Average Patient Age
68.2 years
Avg HCC Risk Score
2.21
Gender Split
62% female / 38% male
Age Distribution
<65: 45, 65-74: 69, 75-84: 31, 85+: 15

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
37
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
28
Ondansetron Odt
Ondansetron
19
Prednisone
12
Cephalexin
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Emergency Medicine Physician Overview

How JOHN CHESTNUT, M.D. fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

JOHN CHESTNUT, M.D.'s 226 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Alabama

Other clinicians with the same primary specialty enrolled in Alabama, drawn from the same CMS NPPES roster as CHESTNUT.

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

Frequently Asked Questions

What is JOHN CHESTNUT, M.D.'s specialty?
JOHN CHESTNUT, M.D. specializes in Emergency Medicine Physician and practices in BIRMINGHAM, Alabama. Credentials: M.D..
How much does JOHN CHESTNUT, M.D. prescribe under Medicare Part D?
In 2023, JOHN CHESTNUT, M.D. wrote 226 Medicare Part D claims totaling $4K in drug costs for 160 beneficiaries.
What is JOHN CHESTNUT, M.D.'s Medicare quality score?
JOHN CHESTNUT, M.D. has a CMS MIPS Final Score of 81.0128/100 (Quality: 71.0106). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JOHN CHESTNUT, M.D. located?
JOHN CHESTNUT, M.D. is located at 619 19TH ST S, BIRMINGHAM, AL, 35249. Phone: (205) 934-3640.
What is JOHN CHESTNUT, M.D.'s NPI number?
JOHN CHESTNUT, M.D.'s National Provider Identifier (NPI) is 1497044499, issued on 03/31/2011.
Does JOHN CHESTNUT, M.D. prescribe opioids?
Yes, JOHN CHESTNUT, M.D. had 69 opioid claims in 2023 with an opioid prescribing rate of 30.5%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does JOHN CHESTNUT, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JOHN CHESTNUT, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen, Ondansetron Odt. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN CHESTNUT, M.D. accept Medicare?
JOHN CHESTNUT, M.D. appears in CMS Medicare data with 226 Part D claims and 160 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN CHESTNUT, M.D.'s credentials?
JOHN CHESTNUT, M.D.'s NPI is 1497044499 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

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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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