Dr. Alan Jesse Chapman Jr., MD
- Medicare services, 2024
- 1,882
- Medicare patients, 2024
- 217
- Part D claims, 2024
- 1,999
- Hospital affiliations
- 5
- Industry payments
- $599
- Practice address
- 24500 Northwest Fwy, Cypress, TX 77429
- Practice phone
- Call (346) 618-1506
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chapman's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Alan Jesse Chapman Jr. is an infectious disease specialist in Cypress, Texas
Dr. Chapman practices at Houston Methodist Cypress Hospital in Cypress, Texas, part of Houston Methodist.
Dr. Chapman's NPI, 1245239177, was assigned on July 21, 2005. Dr. Chapman graduated from Baylor College of Medicine in 1979. Dr. Chapman holds Texas license F3830.
- NPI
- 1245239177NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890729438
- NPI enumeration date
- July 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (346) 618-1506
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alan Jesse Chapman Jr. practices at Houston Methodist Cypress Hospital in Cypress, Texas
Dr. Chapman's primary practice is Houston Methodist Cypress Hospital, at 24500 Northwest Fwy, Cypress, TX 77429 in Harris County. The practice phone is (346) 618-1506.
- Houston Methodist Cypress Hospital24500 Northwest Fwy, Cypress, TX 77429 · Harris CountyPhone(346) 618-1506
Source: Dmand AI Affiliation Data
Dr. Alan Jesse Chapman Jr. is affiliated with 7 sites of care
Dr. Chapman's primary practice is Houston Methodist Cypress Hospital in Cypress, Texas, part of Houston Methodist. Dr. Chapman is also affiliated with Memorial Hermann-Texas Medical Center. Dmand AI also links Dr. Chapman to 3 more hospitals and 2 home health agencies, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alan Jesse Chapman Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chapman practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Houston Methodist Cypress Hospital | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Houston Methodist and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Alan Jesse Chapman Jr. is one of 629 infectious disease specialists in Texas
Infectious disease is Dr. Chapman's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Chapman is licensed in Texas.
Specialties and state licenses
- Infectious disease, TexasPrimary
Infectious disease specialists near Dr. Chapman
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. Alan Jesse Chapman Jr. billed Medicare for 1,882 services in 2024
CMS data shows 1,882 Medicare services from Dr. Chapman across 5 procedure codes in 2024, for 217 Medicare patients. Medicare paid $137,278 for them.
Dr. Chapman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,7742024: 1,8826%
Where Dr. Chapman's Medicare services took place, 2024
- In an office121%
- In a facility1,87099%
Dr. Chapman compared with the Texas median for infectious disease specialists, 2024
- Dr. Chapman
- Texas median
- Medicare services
- 1,882vs 3924.8 times
- Medicare patients
- 217vs 16532% above
- Part D claims
- 1,860vs 2009.3 times
Medians across 571 infectious disease specialists in Texas with Dmand AI profiles that report each measure.
Dr. Chapman'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.
Need commercial claims for Dr. Chapman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chapman and other infectious disease specialists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alan Jesse Chapman Jr. treated 217 Medicare patients in 2024, average age 77
CMS counts 217 Medicare patients who saw Dr. Chapman in 2024. The largest group is 85 and over, with 68 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 3.28, 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. Chapman's median patient age at 68, with 45% women.
Dr. Chapman's Medicare patients by age, 2024
Dr. Chapman's Medicare patients by sex, 2024
- Women10749%
- Men11051%
Chronic conditions among Dr. Chapman's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease65%
- Arthritis61%
- Diabetes59%
- Ischemic heart disease58%
- Heart failure50%
- Atrial fibrillation48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chapman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women45%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alan Jesse Chapman Jr. wrote 1,999 Medicare Part D claims in 2024
In 2024, Dr. Chapman wrote 1,999 Medicare Part D claims for 348 patients. 88% of them were for generic drugs. CMS names the drug for 1,860 of them, across 26 drugs with 11 or more claims each, at $1,635,797 in total drug cost. In 2023, CMS named 1,771 claims across 29 drugs.
Dr. Chapman's Part D claims by kind of drug, 2024
- Generic1,769 claims88%
- Brand-name230 claims12%
Dr. Chapman's most prescribed drugs by claims, 2024
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. Chapman's Part D claims, 2024
- Antibiotics84%1,675 of 1,999 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,7712024: 1,8605%
Drugs named by CMS: 26 in 2024, 29 in 2023.
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
How Dr. Alan Jesse Chapman Jr. takes part in Medicare
Dr. Chapman accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Alan Jesse Chapman Jr. received $599 in industry payments from 2016 to 2024
CMS Open Payments shows 58 general payments to Dr. Chapman from 7 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 96% of the total. Allergan Inc. paid the most, $284.
General payments to Dr. Chapman by program year, 2016 to 2024
General payments to Dr. Chapman by kind, 2016 to 2024
- Food and beverage$57396%
- Education$254%
Companies that paid Dr. Chapman the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alan Jesse Chapman Jr. graduated from Baylor College of Medicine
Dr. Chapman graduated from Baylor College of Medicine in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alan Jesse Chapman Jr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Alan Jesse Chapman Jr.
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. Alan Jesse Chapman Jr.'s NPI number?
Dr. Alan Jesse Chapman Jr.'s NPI number is 1245239177. It was assigned on July 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Alan Jesse Chapman Jr.?
Dr. Alan Jesse Chapman Jr. is an infectious disease specialist in Cypress, Texas. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Alan Jesse Chapman Jr. practice?
Dr. Chapman practices at 24500 Northwest Fwy, Cypress, TX 77429. Dr. Chapman's primary practice is Houston Methodist Cypress Hospital in Cypress, Texas, part of Houston Methodist. Dmand AI also links Dr. Chapman to 3 hospitals and 2 home health agencies.
What is Dr. Alan Jesse Chapman Jr.'s office phone number?
The practice phone on file for Dr. Chapman is (346) 618-1506.
What is Dr. Alan Jesse Chapman Jr.'s medical license number?
Dr. Chapman holds Texas license F3830.
Which hospitals is Dr. Alan Jesse Chapman Jr. affiliated with?
Dr. Chapman practices at Houston Methodist Cypress Hospital in Cypress, Texas. Dr. Chapman is also affiliated with Memorial Hermann-Texas Medical Center. Dmand AI links Dr. Chapman to 3 more hospitals.
Does Dr. Alan Jesse Chapman Jr. accept Medicare?
Yes. CMS data shows Dr. Chapman billed Medicare for 1,882 services in 2024, and Dr. Chapman accepts Medicare assignment.
How many Medicare patients does Dr. Alan Jesse Chapman Jr. see?
CMS counts 217 Medicare patients who saw Dr. Chapman in 2024, with an average age of 77.
What services does Dr. Alan Jesse Chapman Jr. bill to Medicare?
In 2024, Dr. Chapman's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99223).
Where did Dr. Alan Jesse Chapman Jr. go to medical school?
Dr. Chapman graduated from Baylor College of Medicine in 1979.
Show 3 more questionsShow fewer questions
What drugs does Dr. Alan Jesse Chapman Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Chapman's most prescribed drugs by claims were Daptomycin, Ertapenem and Cefdinir.
Has Dr. Alan Jesse Chapman Jr. received payments from drug or device companies?
CMS Open Payments shows $599 in general payments to Dr. Chapman from 7 companies from 2016 to 2024. The largest total came from Allergan Inc.
How long has Dr. Alan Jesse Chapman Jr. been practicing?
Dr. Chapman graduated from medical school in 1979, 47 years ago.
Selling to infectious disease practices?
See infectious disease specialists in Texas by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card