Dr. John W. Baddley, MD

  • Columbia, MD
  • Infectious disease specialist
NPI1801841333PAC ID8022280247
Medicare services, 2024
175
Medicare patients, 2024
97
Part D claims, 2024
48
Publications
148
Hospital affiliations
2
Practice address
5759 Cedar Lane, Columbia, MD 21044
Practice phone
Call (443) 718-3738
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Johns Hopkins Surgery Centers - Howard County

Surgery Center - Medicare-Certified · Columbia, Maryland

See all 6 affiliations

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Dr. John W. Baddley is an infectious disease specialist in Columbia, Maryland

Dr. Baddley practices at Johns Hopkins Surgery Centers - Howard County in Columbia, Maryland.

Dr. Baddley's NPI, 1801841333, was assigned on May 23, 2006. Dr. Baddley graduated from Louisiana State University School of Medicine in New Orleans in 1995. Dr. Baddley's Alabama license number on file is 21647.

NPI and contact details
Medicare PAC ID
8022280247
NPI enumeration date
May 23, 2006
NPI status
Active
Offers telehealth
Yes
Practice phone
(443) 718-3738
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
57
Medical school graduation
1995

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. John W. Baddley practices at Johns Hopkins Surgery Centers - Howard County in Columbia, Maryland

Dr. Baddley's primary practice is Johns Hopkins Surgery Centers - Howard County, at 5759 Cedar Lane, Columbia, MD 21044. The practice phone is (443) 718-3738.

  • Johns Hopkins Surgery Centers - Howard County
    5759 Cedar Lane, Columbia, MD 21044Phone(443) 718-3738

Source: Dmand AI Affiliation Data

Dr. John W. Baddley is affiliated with 3 sites of care and 3 medical groups

Dr. Baddley's primary practice is Johns Hopkins Surgery Centers - Howard County in Columbia, Maryland. Dr. Baddley is also affiliated with The Johns Hopkins Hospital. The medical group on file is Johns Hopkins University. Dmand AI also links Dr. Baddley to 1 more hospital and 2 medical groups, each named with a free account.

See all 6 affiliations for Dr. Baddley

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. John W. Baddley's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Baddley practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Johns Hopkins Surgery Centers - Howard CountyAvailable with a free account
+2 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. John W. Baddley is one of 303 infectious disease specialists in Maryland

Infectious disease is Dr. Baddley's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Baddley is board certified in infectious disease by the American Board of Internal Medicine. Dmand AI has Dr. Baddley's licenses on file in 3 states: Alabama, Maryland and Louisiana.

Specialties and state licenses

  • Infectious disease, AlabamaPrimaryLicense 21647 · 1998 to 2020 · taxonomy 207RI0200X
  • Maryland license2019 to 2026
  • Louisiana license1996 to 2003

Clinical focus

Dmand AI lists acute skin infection, cold sores or genital herpes, pneumonia, UTI and yeast infection among the conditions Dr. Baddley treats.

Infectious disease specialists near Dr. Baddley

Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. John W. Baddley billed Medicare for 175 services in 2024

CMS data shows 175 Medicare services from Dr. Baddley across 6 procedure codes in 2024, for 97 Medicare patients. Medicare paid $18,599 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024175
Medicare patients97
Paid by Medicare$18,599
Procedure codes6

Dr. Baddley's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3512024: 17550%

Dr. Baddley compared with the Maryland median for infectious disease specialists, 2024

  • Dr. Baddley
  • Maryland median
Medicare services
175vs 21719% below
Medicare patients
97vs 12623% below
Part D claims
59vs 9840% below

Medians across 250 infectious disease specialists in Maryland with Dmand AI profiles that report each measure.

Dr. Baddley's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Baddley

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Baddley and other infectious disease specialists in Maryland.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. John W. Baddley treated 97 Medicare patients in 2024, average age 63

CMS counts 97 Medicare patients who saw Dr. Baddley in 2024. The largest group is 65 to 74, with 50 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 4.20, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Baddley's median patient age at 69, with 47% women.

Medicare patients, 202497
Average age63
Average risk score4.20
Also on Medicaid34%

Dr. Baddley's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Baddley's Medicare patients by sex, 2024

  • Women4445%
  • Men5355%

Chronic conditions among Dr. Baddley's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Chronic kidney disease63%
  4. Diabetes52%
  5. Arthritis46%
  6. Ischemic heart disease46%
  7. Heart failure43%
  8. Anxiety41%

Share of Medicare patients with each condition. A patient can have several.

Dr. Baddley's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 69

Patient panel by sex, all payers

  • Women47%
  • Men52%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. John W. Baddley wrote 48 Medicare Part D claims in 2024

In 2024, Dr. Baddley wrote 48 Medicare Part D claims for 15 patients. 100% of them were for generic drugs. They cover 4 drugs, with $3,143 in total drug cost. In 2016, CMS named 36 claims across 3 drugs.

Part D claims, 202448
Drugs named by CMS4
Total drug cost$3,143
Part D patients15

Dr. Baddley's most prescribed drugs by claims, 2019

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Baddley's Part D claims, 2024

  • Antibiotics60%29 of 48 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2016 to 2019

  • 2016
  • 2019
Claims for drugs CMS names
2016: 362019: 5964%

Drugs named by CMS: 4 in 2019, 3 in 2016.

See all prescribing by Dr. Baddley

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. John W. Baddley offers telehealth to Medicare patients

CMS lists Dr. Baddley as offering telehealth.

Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

For MedTech and pharma teams

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Dr. John W. Baddley has 148 publications on record

Dmand AI links 148 papers to Dr. Baddley, published from 2001 to 2025. 2022 was the busiest year, with 7. The most frequent topics are Antifungal Agents, Organ Transplantation and Antirheumatic Agents. Dr. Baddley has published most often in Clin Infect Dis. Dr. Baddley's most frequent co-authors are Jeffrey R. Curtis, MD, Peter G. Pappas and Djordje Atanackovic, MD.

Papers148
Years published2001 to 2025

Dr. Baddley's papers by year, 2016 to 2025

Topics Dr. Baddley writes about most

  • Antifungal Agents
  • Organ Transplantation
  • Antirheumatic Agents
  • Arthritis, Rheumatoid
  • Immunocompromised Host
  • COVID-19
  • Histoplasmosis
  • Transplant Recipients

Dr. Baddley's most frequent co-authors

Recent publications by Dr. Baddley

See all 148 publications and co-authors

See who Dr. Baddley researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Baddley works with, so you can find a warm path to the right infectious disease specialists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. John W. Baddley received $133,655 in industry payments from 2016 to 2025

CMS Open Payments shows 72 general payments to Dr. Baddley from 5 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 93% of the total. Eli Lilly and Company paid the most, $54,869. It also lists 2 research payments totaling $6,834 in 2025.

General payments to Dr. Baddley by program year, 2016 to 2025

General payments to Dr. Baddley by kind, 2016 to 2025

$133.7Kin total
  • Consulting fees$123,77393%
  • Honoraria$8,5006%
  • Travel and lodging$1,1321%
  • Food and beverage$2500%

Companies that paid Dr. Baddley the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Baddley

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. John W. Baddley graduated from Louisiana State University School of Medicine in New Orleans

Dr. Baddley graduated from Louisiana State University School of Medicine in New Orleans in 1995.

  1. Medical schoolLouisiana State University School of Medicine in New Orleans
  2. Board certified in infectious diseaseAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. John W. Baddley accepts plans from 10 insurance carriers

Dr. Baddley is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • CareFirst BlueCross BlueShield
  • United Healthcare
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • +2 more carriersWith a free account

Plan types Dr. Baddley accepts, by number of carriers

  1. Medicare9
  2. PPO7
  3. HMO5
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. John W. Baddley's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. John W. Baddley

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. John W. Baddley's NPI number?

Dr. John W. Baddley's NPI number is 1801841333. It was assigned on May 23, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. John W. Baddley?

Dr. John W. Baddley is an infectious disease specialist in Columbia, Maryland. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).

Where does Dr. John W. Baddley practice?

Dr. Baddley practices at 5759 Cedar Lane, Columbia, MD 21044. Dr. Baddley's primary practice is Johns Hopkins Surgery Centers - Howard County in Columbia, Maryland. Dmand AI also links Dr. Baddley to 1 hospital and 2 medical groups.

What is Dr. John W. Baddley's office phone number?

The practice phone on file for Dr. Baddley is (443) 718-3738.

What is Dr. John W. Baddley's medical license number?

Dr. Baddley's Alabama license number on file is 21647, one of the licenses on file in 3 states.

Which states has Dr. John W. Baddley been licensed in?

Dmand AI has state licenses on file for Dr. Baddley in Alabama (1998 to 2020), Maryland (2019 to 2026) and Louisiana (1996 to 2003).

Which hospitals is Dr. John W. Baddley affiliated with?

Dr. Baddley is affiliated with The Johns Hopkins Hospital. Dmand AI links Dr. Baddley to 1 more hospital.

What medical group is Dr. John W. Baddley part of?

Dr. Baddley is linked to Johns Hopkins University. Dmand AI links Dr. Baddley to 2 more medical groups.

Does Dr. John W. Baddley accept Medicare?

Yes. CMS data shows Dr. Baddley billed Medicare for 175 services in 2024.

Does Dr. John W. Baddley offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Baddley as offering telehealth services.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. John W. Baddley see?

CMS counts 97 Medicare patients who saw Dr. Baddley in 2024, with an average age of 63.

Is Dr. John W. Baddley board certified?

Yes. Dr. Baddley is board certified in infectious disease by the American Board of Internal Medicine.

What services does Dr. John W. Baddley bill to Medicare?

In 2024, Dr. Baddley's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99215) and hospital inpatient care (99223).

Where did Dr. John W. Baddley go to medical school?

Dr. Baddley graduated from Louisiana State University School of Medicine in New Orleans in 1995.

What drugs does Dr. John W. Baddley prescribe most?

In 2019 Medicare Part D data, Dr. Baddley's most prescribed drugs by claims were Sulfamethoxazole-Trimethoprim, Azithromycin and Doxycycline Hyclate.

Has Dr. John W. Baddley received payments from drug or device companies?

CMS Open Payments shows $133,655 in general payments to Dr. Baddley from 5 companies from 2016 to 2025. The largest total came from Eli Lilly and Company.

How long has Dr. John W. Baddley been practicing?

Dr. Baddley graduated from medical school in 1995, 31 years ago.

Does Dr. John W. Baddley do research?

Dmand AI links 148 publications to Dr. Baddley, published from 2001 to 2025.

Who does Dr. John W. Baddley publish with?

Dr. Baddley's most frequent co-authors are Jeffrey R. Curtis, MD (22 shared papers), Peter G. Pappas (19 shared papers) and Djordje Atanackovic, MD (7 shared papers).

What insurance does Dr. John W. Baddley accept?

Dr. Baddley is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

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