NPI registry status
Active
2026 NPPES data Allergy & Immunology (Internal Medicine) Physician NPI 1538182811 MD
Verify on CMS → John Wood, MD
Allergy & Immunology (Internal Medicine) Physician in Chesterfield, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 517 in Allergy & Immunology (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
4K
Medicare Part D claims · 347 beneficiaries · Allergy & Immunology (Internal Medicine) Physician avg: 798
Generic prescribing
74%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
21.5/100
▼ 62 pts below national avg 83.1 · Below average
Industry payments
$710.09
33 payments · CMS Open Payments (Sunshine Act)
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
John Wood, MD reported a CMS MIPS final score of 21.5/100 - below the 83.1 national average - and filed 3,971 Medicare Part D claims in 2023.
- 21.5/100
- MIPS score · -62 vs avg
- 4K
- Part D claims, 2023
- 74%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
John Wood, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
22 3rd percentile higher than 3% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where John Wood, MD sits
This provider among allergy & immunology (internal medicine) physician peers
Across the 130 allergy & immunology (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, John Wood, MD writes more Part D claims than 95% of them and scores higher on MIPS quality than 1% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one allergy & immunology (internal medicine) physician peer from a representative sample of 60; the gold marker is John Wood, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
John Wood, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about John Wood, MD?
Below national averagePrimary specialty
Allergy & Immunology (Internal Medicine) Physician
Medicare Part D claims
3,971 398% vs specialty avg
MIPS final score
21.5/100 61.6 pts vs avg
Specialty distribution in Missouri
How Allergy & Immunology (Internal Medicine) Physician compares to other specialties among Missouri providers
Medicare quality performance, MIPS
John Wood, MD's 2023 MIPS final score plotted against the Allergy & Immunology (Internal Medicine) Physician national average
- MIPS Final Score
- 21.5/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Allergy & Immunology (Internal Medicine) Physician) - 21.5/100 vs national avg 83.1
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).
John Wood, MD appears in the CMS NPPES registry as an Allergy & Immunology (Internal Medicine) Physician provider holding MD credentials at 224 S WOODS MILL RD, Chesterfield, MO, 63017, with a listed phone of (317) 878-6260. NPI 1538182811 was issued on 07/26/2006.
Medicare Part D records for calendar year 2023 show 3,971 prescription claims written by this provider, covering 347 Medicare beneficiaries and totaling roughly $927K in drug spend, split 25% brand-name and 74% generic by claim count, with an opioid prescribing rate of 1.6%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 21.5/100 for the 2023 performance year (Quality 0, Cost 71.8), compared with the national average of 83.1.
Allergy & Immunology (Internal Medicine) Physician is a narrow specialty nationwide, with 517 enrolled providers across 47 states and an average of 798 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 | 1538182811 |
|---|---|
| Specialty | Allergy & Immunology (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/26/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
21.5423
Final Score
Avg: 83.1
0
Quality
71.8078
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where John Wood, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Internal Medicine Associates, Ltd.
Chesterfield, MO
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Wood, MD. Source: openpaymentsdata.cms.gov.
Total received
$710
Largest payer
GlaxoSmithKline, LLC.
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.
Brand vs generic prescribing mix · Above average
John Wood, MD - brand share 25.0%
Allergy & Immunology (Internal Medicine) Physician average
25% brand-name claims vs 74% generic, on 3,971 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.
3,971
Total Claims
$927K
Total Drug Cost
347
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,552
- Total Day Supply
- 199,193
- Brand vs Generic
- 25% brand / 74% generic
- Brand Drug Cost
- $850K
- Generic Drug Cost
- $75K
- Opioid Claims
- 64 (1.6% rate)
- Antibiotic Claims
- 316
Patient Demographics
- Average Patient Age
- 78.0 years
- Avg HCC Risk Score
- 1.42
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Wood, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Albuterol Sulfate …
Albuterol Sulfate Hfa
141 claims
- Atorvastatin Calcium
Atorvastatin Calcium
138 claims
- Losartan Potassium
Losartan Potassium
122 claims
- Prednisone
Prednisone
120 claims
- Azithromycin
Azithromycin
104 claims
- Levothyroxine Sodium
Levothyroxine Sodium
97 claims
- Metoprolol Succinate
Metoprolol Succinate
93 claims
- Trelegy Ellipta
Trelegy Ellipta
93 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 141 |
| Atorvastatin Calcium | 138 |
| Losartan Potassium | 122 |
| Prednisone | 120 |
| Azithromycin | 104 |
| Levothyroxine Sodium | 97 |
| Metoprolol Succinate | 93 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 93 |
| Rosuvastatin Calcium | 86 |
| Symbicort Budesonide/Formoterol Fumarate | 85 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Allergy & Immunology (Internal Medicine) Physician in MO →
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Allergy & Immunology (Internal Medicine) Physician Overview
How John Wood, MD fits within the Allergy & Immunology (Internal Medicine) Physician landscape nationally.
517
Allergy & Immunology (Internal Medicine) Physician Providers in US
47
States with Allergy & Immunology (Internal Medicine) Physician
798
Avg Claims per Provider
John Wood, MD's 3,971 claims are above the specialty average of 798.
Nearby Allergy & Immunology (Internal Medicine) Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Wood.
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 Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Allergy & Immunology (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 John Wood, MD's specialty? ▼
John Wood, MD specializes in Allergy & Immunology (Internal Medicine) Physician and practices in Chesterfield, Missouri. Credentials: MD.
How much does John Wood, MD prescribe under Medicare Part D? ▼
In 2023, John Wood, MD wrote 3,971 Medicare Part D claims totaling $927K in drug costs for 347 beneficiaries.
What is John Wood, MD's Medicare quality score? ▼
John Wood, MD has a CMS MIPS Final Score of 21.5/100 (Quality: 0, Cost: 71.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is John Wood, MD located? ▼
John Wood, MD is located at 224 S WOODS MILL RD, Chesterfield, MO, 63017. Phone: (317) 878-6260.
What is John Wood, MD's NPI number? ▼
John Wood, MD's National Provider Identifier (NPI) is 1538182811, issued on 07/26/2006.
Does John Wood, MD prescribe more brand-name or generic drugs? ▼
John Wood, MD's prescribing is 25% brand-name and 74% generic drugs by claim count, with $850K in brand drug costs.
Does John Wood, MD prescribe opioids? ▼
Yes, John Wood, MD had 64 opioid claims in 2023 with an opioid prescribing rate of 1.6%.
How many Allergy & Immunology (Internal Medicine) Physician providers are there in the US? ▼
There are 517 Allergy & Immunology (Internal Medicine) Physician providers across 47 states in the US. The average Allergy & Immunology (Internal Medicine) Physician provider writes 798 Medicare Part D claims per year.
What drugs does John Wood, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, John Wood, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Atorvastatin Calcium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Wood, MD accept Medicare? ▼
John Wood, MD appears in CMS Medicare data with 3,971 Part D claims and 347 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Wood, MD's credentials? ▼
John Wood, MD's NPI is 1538182811 with credentials MD. 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.
- 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
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.