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Dr. Stephen T. Simpson Jr., MD
NPI1013940998PAC ID4587670112
- Medicare services, 2024
- 624
- Medicare patients, 2024
- 127
- Part D claims, 2024
- 10,119
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 5 Mobile Infirmary Circle, Mobile, AL 36607
- Practice phone
- Call (251) 435-4700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Stephen T. Simpson Jr. is an internist in Mobile, Alabama
Dr. Simpson practices at Mobile Infirmary in Mobile, Alabama, part of Infirmary Health.
Dr. Simpson's NPI, 1013940998, was assigned on July 7, 2006. Dr. Simpson graduated from University of Alabama School of Medicine in 1999. Dr. Simpson holds Alabama license MD.24563.
NPI and contact details
- NPI
- 1013940998NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587670112
- NPI enumeration date
- July 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (251) 435-4700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen T. Simpson Jr. practices at Mobile Infirmary in Mobile, Alabama
Dr. Simpson's primary practice is Mobile Infirmary, at 5 Mobile Infirmary Circle, Mobile, AL 36607 in Mobile County. The practice phone is (251) 435-4700.
- Mobile Infirmary5 Mobile Infirmary Circle, Mobile, AL 36607 · Mobile CountyPhone(251) 435-4700
Source: Dmand AI Affiliation Data
Dr. Stephen T. Simpson Jr. is affiliated with 1 site of care and 2 medical groups
Dr. Simpson's primary practice is Mobile Infirmary in Mobile, Alabama, part of Infirmary Health. The medical group on file is Eastern Shore Urgent Care. Dmand AI also links Dr. Simpson to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephen T. Simpson Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simpson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mobile Infirmary | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen T. Simpson Jr. is one of 1,685 internists in Alabama
Internal medicine is Dr. Simpson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Simpson is licensed in Alabama.
Specialties and state licenses
- Internal medicine, AlabamaPrimary
Internists near Dr. Simpson
Counts of internists 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. Stephen T. Simpson Jr. billed Medicare for 624 services in 2024
CMS data shows 624 Medicare services from Dr. Simpson across 7 procedure codes in 2024, for 127 Medicare patients. Medicare paid $44,882 for them. Every service was in an office.
Medicare services, 2024624
Medicare patients127
Paid by Medicare$44,882
Procedure codes7
Dr. Simpson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3582024: 40112%
- Other services
- 2023: 802024: 183129%
- Tests and treatments
- 2023: 02024: 40
Dr. Simpson compared with the Alabama median for internists, 2024
- Dr. Simpson
- Alabama median
- Medicare services
- 624vs 6646% below
- Medicare patients
- 127vs 20337% below
- Part D claims
- 9,295vs 50018.6 times
Medians across 1,610 internists in Alabama with Dmand AI profiles that report each measure.
Dr. Simpson'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. Simpson?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Simpson and other internists in Alabama.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen T. Simpson Jr. treated 127 Medicare patients in 2024, average age 75
CMS counts 127 Medicare patients who saw Dr. Simpson in 2024. The largest group is 65 to 74, with 58 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.20, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Simpson's median patient age at 55, with 61% women.
Medicare patients, 2024127
Average age75
Average risk score1.20
Dr. Simpson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Simpson's Medicare patients by sex, 2024
- Women7257%
- Men5543%
Chronic conditions among Dr. Simpson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis37%
- Diabetes36%
- Ischemic heart disease36%
- Mood disorders36%
- Depression34%
- Chronic kidney disease33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Simpson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen T. Simpson Jr. wrote 10,119 Medicare Part D claims in 2024
In 2024, Dr. Simpson wrote 10,119 Medicare Part D claims for 627 patients. 87% of them were for generic drugs. CMS names the drug for 9,295 of them, across 140 drugs with 11 or more claims each, at $901,482 in total drug cost. In 2023, CMS named 8,736 claims across 138 drugs.
Part D claims, 202410,119
Drugs named by CMS140
Total drug cost$901,482
Part D patients627
Dr. Simpson's Part D claims by kind of drug, 2024
- Generic8,803 claims87%
- Brand-name1,271 claims13%
- Other45 claims0%
Dr. Simpson'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. Simpson's Part D claims, 2024
- Opioids1%69 of 10,119 claims
- Antibiotics3%288 of 10,119 claims
- Antipsychotics, patients 65 and over0%43 of 10,119 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: 8,7362024: 9,2956%
Drugs named by CMS: 140 in 2024, 138 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. Stephen T. Simpson Jr. takes part in Medicare
Dr. Simpson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Stephen T. Simpson Jr. has 2 publications on record
Dmand AI links 2 papers to Dr. Simpson. The most frequent topics are Dog Diseases and Dogs. Dr. Simpson has published most often in J Am Vet Med Assoc.
Papers2
Topics Dr. Simpson writes about most
- Dog Diseases
- Dogs
Recent publications by Dr. Simpson
J Am Vet Med Assoc
Bone Diseases, DevelopmentalDog DiseasesDogs
See who Dr. Simpson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Simpson works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stephen T. Simpson Jr. received $8,210 in industry payments from 2016 to 2025
CMS Open Payments shows 626 general payments to Dr. Simpson from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,456.
General payments to Dr. Simpson by program year, 2016 to 2025
General payments to Dr. Simpson by kind, 2016 to 2025
$8.2Kin total
- Food and beverage$8,174100%
- Education$350%
Companies that paid Dr. Simpson the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen T. Simpson Jr. graduated from University of Alabama School of Medicine
Dr. Simpson graduated from University of Alabama School of Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen T. Simpson 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Stephen T. Simpson 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. Stephen T. Simpson Jr.'s NPI number?
Dr. Stephen T. Simpson Jr.'s NPI number is 1013940998. It was assigned on July 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen T. Simpson Jr.?
Dr. Stephen T. Simpson Jr. is an internist in Mobile, Alabama. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Stephen T. Simpson Jr. practice?
Dr. Simpson practices at 5 Mobile Infirmary Circle, Mobile, AL 36607. Dr. Simpson's primary practice is Mobile Infirmary in Mobile, Alabama, part of Infirmary Health. Dmand AI also links Dr. Simpson to 1 medical group.
What is Dr. Stephen T. Simpson Jr.'s office phone number?
The practice phone on file for Dr. Simpson is (251) 435-4700.
What is Dr. Stephen T. Simpson Jr.'s medical license number?
Dr. Simpson holds Alabama license MD.24563.
Which hospitals is Dr. Stephen T. Simpson Jr. affiliated with?
Dr. Simpson practices at Mobile Infirmary in Mobile, Alabama.
What medical group is Dr. Stephen T. Simpson Jr. part of?
Dr. Simpson is linked to Eastern Shore Urgent Care. Dmand AI links Dr. Simpson to 1 more medical group.
Does Dr. Stephen T. Simpson Jr. accept Medicare?
Yes. CMS data shows Dr. Simpson billed Medicare for 624 services in 2024, and Dr. Simpson accepts Medicare assignment.
How many Medicare patients does Dr. Stephen T. Simpson Jr. see?
CMS counts 127 Medicare patients who saw Dr. Simpson in 2024, with an average age of 75.
What services does Dr. Stephen T. Simpson Jr. bill to Medicare?
In 2024, Dr. Simpson's most billed Medicare services were office visit, established patient (99214), medicare service (G0444) and medicare service (G0439).
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Where did Dr. Stephen T. Simpson Jr. go to medical school?
Dr. Simpson graduated from University of Alabama School of Medicine in 1999.
What drugs does Dr. Stephen T. Simpson Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Simpson's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Stephen T. Simpson Jr. received payments from drug or device companies?
CMS Open Payments shows $8,210 in general payments to Dr. Simpson from 43 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Stephen T. Simpson Jr. been practicing?
Dr. Simpson graduated from medical school in 1999, 27 years ago.
Does Dr. Stephen T. Simpson Jr. do research?
Dmand AI links 2 publications to Dr. Simpson.
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