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 528 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 · 336 beneficiaries · Allergy & Immunology (Internal Medicine) Physician avg: 835
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
21.5/100
▼ 62 pts below national avg 83.5 · Below average
Industry payments
$710.09
33 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Wood, MD reported a CMS MIPS final score of 21.5/100 - below the 83.5 national average - and filed 3,511 Medicare Part D claims in 2024.
- 21.5/100
- MIPS score · -62 vs avg
- 4K
- Part D claims, 2024
- 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.
Federal trust snapshot
What official records show about John Wood, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1538182811), first enumerated 07/26/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,511 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 21.5/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$710.09 in reported industry payments (33 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1538182811 · Allergy & Immunology (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-LOW · RX-MID · BOOK-THIN · NEAR-MIPS
- NPI-10 1538182811
- ENUM-LEGACY 2006
- TAX-NARROW 528
- MIPS-LOW 21.5/100
- RX-MID 3,511
- BOOK-THIN 22 in Missouri
- NEAR-MIPS Dan Brody · 6.5
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Alfred Johnson ·… 8.9
Alfred Johnson
8.9 MIPS pts
- Wood · this prov…
Wood · this provider
21.5 MIPS pts
- Dan Brody · near
Dan Brody
28 MIPS pts
- Nasim Sheikh · n…
Nasim Sheikh
28.2 MIPS pts
- Gilbert Kuhn · h…
Gilbert Kuhn
50.7 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
John Wood, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
22 ≥ 3rd percentile 3% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
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 124 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.
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
3,511 320% vs specialty avg
MIPS final score
21.5/100 62 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 83.5 national avg · 2023 performance year
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).
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
Measured-score avg: 83.5
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 26.0%
Allergy & Immunology (Internal Medicine) Physician average
26% brand-name claims vs 74% generic, on 3,511 2024 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 2024.
3,511
Total Claims
$815K
Total Drug Cost
336
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,008.1
- Total Day Supply
- 190,270
- Brand vs Generic
- 26% brand / 74% generic
- Brand Drug Cost
- $758K
- Generic Drug Cost
- $56K
- Opioid Claims
- 30 (0.9% rate)
- Antibiotic Claims
- 323
Patient Demographics
- Average Patient Age
- 78.5 years
- Avg HCC Risk Score
- 1.53
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Wood, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Losartan Potassium
Losartan Potassium
172 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
154 claims
- Prednisone
Prednisone
142 claims
- Trelegy Ellipta
Trelegy Ellipta
124 claims
- Atorvastatin Calcium
Atorvastatin Calcium
113 claims
- Azithromycin
Azithromycin
101 claims
- Levothyroxine Sodium
Levothyroxine Sodium
90 claims
- Metoprolol Succinate
Metoprolol Succinate
89 claims
| Drug | Claims |
|---|---|
| Losartan Potassium | 172 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 154 |
| Prednisone | 142 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 124 |
| Atorvastatin Calcium | 113 |
| Azithromycin | 101 |
| Levothyroxine Sodium | 90 |
| Metoprolol Succinate | 89 |
| Alprazolam | 83 |
| Montelukast Sodium | 79 |
* 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 →
All providers in Missouri →
Compare specialties →
Allergy & Immunology (Internal Medicine) Physician Overview
How John Wood, MD fits within the Allergy & Immunology (Internal Medicine) Physician landscape nationally.
528
Allergy & Immunology (Internal Medicine) Physician Providers in US
47
States with Allergy & Immunology (Internal Medicine) Physician
835
Avg Claims per Provider
John Wood, MD's 3,511 claims are above the specialty average of 835.
Nationwide Allergy & Immunology (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Wood, both outside Missouri so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (21.5 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 22 Allergy & Immunology (Internal Medicine) Physician providers enrolled in Missouri, 5 are shown here.
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 2024, John Wood, MD wrote 3,511 Medicare Part D claims totaling $815K in drug costs for 336 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 average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. 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 26% brand-name and 74% generic drugs by claim count, with $758K in brand drug costs.
Does John Wood, MD prescribe opioids? ▼
Yes, John Wood, MD had 30 opioid claims in 2024 with an opioid prescribing rate of 0.9%.
How many Allergy & Immunology (Internal Medicine) Physician providers are there in the US? ▼
There are 528 Allergy & Immunology (Internal Medicine) Physician providers across 47 states in the US. The average Allergy & Immunology (Internal Medicine) Physician provider writes 835 Medicare Part D claims per year.
What drugs does John Wood, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, John Wood, MD's most frequently prescribed drugs include Losartan Potassium, Albuterol Sulfate Hfa, Prednisone. 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 3,511 Part D claims and 336 Medicare beneficiaries in 2024. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.