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Dr. John William Longwell, MD
NPI1023198900PAC ID3577501634
- Medicare services, 2024
- 13
- Medicare patients, 2024
- 70
- Publications
- 1
- MIPS score, 2024
- 89
- Hospital affiliations
- 1
- Practice address
- 301 University Boulevard, Galveston, TX 77555
- Practice phone
- Call (409) 772-1011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Longwell's professional email, personal email and mobile number
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Dr. John William Longwell is an anesthesiologist in Galveston, Texas
Dr. Longwell practices at John Sealy Hospital in Galveston, Texas, part of The University of Texas System.
Dr. Longwell's NPI, 1023198900, was assigned on October 16, 2006. Dr. Longwell graduated from UTMB Health in 1998. Dr. Longwell holds Texas license L3735.
NPI and contact details
- NPI
- 1023198900NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3577501634
- NPI enumeration date
- October 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (409) 772-1011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John William Longwell practices at John Sealy Hospital in Galveston, Texas
Dr. Longwell's primary practice is John Sealy Hospital, at 301 University Boulevard, Galveston, TX 77555 in Galveston County. The practice phone is (409) 772-1011.
- John Sealy Hospital301 University Boulevard, Galveston, TX 77555 · Galveston CountyPhone(409) 772-1011
Source: Dmand AI Affiliation Data
Dr. John William Longwell is affiliated with 2 sites of care and 1 medical group
Dr. Longwell's primary practice is John Sealy Hospital in Galveston, Texas, part of The University of Texas System. The medical group on file is UTMB Faculty Group Practice. Dmand AI also links Dr. Longwell to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John William Longwell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Longwell practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Sealy Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. John William Longwell is one of 4,073 anesthesiologists in Texas
Anesthesiology is Dr. Longwell's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Longwell is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Longwell's licenses on file in 2 states: Texas and California.
Specialties and state licenses
- Anesthesiology, TexasPrimary
- California license
Anesthesiologists near Dr. Longwell
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
4,073anesthesiologists in Texas108anesthesiologists in Galveston69anesthesiologists at John Sealy Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John William Longwell billed Medicare for 13 services in 2024
CMS data shows 13 Medicare services from Dr. Longwell across 1 procedure code in 2024, for 70 Medicare patients. Medicare paid $301 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202413
Medicare patients70
Paid by Medicare$301
Procedure codes1
Dr. Longwell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 832024: 1384%
- Anesthesia
- 2023: 112024: 0100%
- Surgery
- 2023: 1812024: 0100%
Dr. Longwell compared with the Texas median for anesthesiologists, 2024
- Dr. Longwell
- Texas median
- Medicare services
- 13vs 7182% below
- Medicare patients
- 70vs 13247% below
Medians across 3,710 anesthesiologists in Texas with Dmand AI profiles that report each measure.
Dr. Longwell'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. Longwell?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Longwell and other anesthesiologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John William Longwell treated 70 Medicare patients in 2024, average age 72
CMS counts 70 Medicare patients who saw Dr. Longwell in 2024. The largest group is 65 to 74, with 31 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 17% are also on Medicaid. Their average risk score is 2.54, 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. Longwell's median patient age at 65, with 61% women.
Medicare patients, 202470
Average age72
Average risk score2.54
Also on Medicaid17%
Dr. Longwell's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Longwell's Medicare patients by sex, 2024
- Women3550%
- Men3550%
Chronic conditions among Dr. Longwell's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease53%
- Arthritis47%
- Diabetes46%
- Chronic kidney disease44%
- Heart failure34%
- Mood disorders31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Longwell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
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. John William Longwell scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Longwell for performance year 2024, reported as part of a group. Dr. Longwell accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Longwell's MIPS scores, performance year 2024
- 89of 100Final score
- 91.3of 100Quality
- 40of 100Improvement Activities
- 79of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John William Longwell has 1 publication on record
Dmand AI links 1 paper to Dr. Longwell in 2021.
Papers1
Recent publications by Dr. Longwell
See who Dr. Longwell researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Longwell works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John William Longwell received $1,118 in industry payments from 2019 to 2024
CMS Open Payments shows 16 general payments to Dr. Longwell from 4 drug and device companies from 2019 to 2024. Travel and lodging make up the largest share, 74% of the total. Pacira Pharmaceuticals Incorporated paid the most, $959.
General payments to Dr. Longwell by program year, 2019 to 2024
General payments to Dr. Longwell by kind, 2019 to 2024
$1.1Kin total
- Travel and lodging$82674%
- Food and beverage$29226%
Companies that paid Dr. Longwell the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John William Longwell graduated from UTMB Health
Dr. Longwell graduated from UTMB Health in 1998.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. John William Longwell accepts plans from 18 insurance carriers
Dr. Longwell is in network with 18 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Molina
- +10 more carriersWith a free account
Plan types Dr. Longwell accepts, by number of carriers
- HMO10
- PPO10
- Medicare7
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. John William Longwell'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. John William Longwell
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 William Longwell's NPI number?
Dr. John William Longwell's NPI number is 1023198900. It was assigned on October 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John William Longwell?
Dr. John William Longwell is an anesthesiologist in Galveston, Texas. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. John William Longwell practice?
Dr. Longwell practices at 301 University Boulevard, Galveston, TX 77555. Dr. Longwell's primary practice is John Sealy Hospital in Galveston, Texas, part of The University of Texas System. Dmand AI also links Dr. Longwell to 1 group practice or clinic.
What is Dr. John William Longwell's office phone number?
The practice phone on file for Dr. Longwell is (409) 772-1011.
What is Dr. John William Longwell's medical license number?
Dr. Longwell holds Texas license L3735, one of the licenses on file in 2 states.
Which states has Dr. John William Longwell been licensed in?
Dmand AI has state licenses on file for Dr. Longwell in Texas (2002 to 2027) and California.
Which hospitals is Dr. John William Longwell affiliated with?
Dr. Longwell practices at John Sealy Hospital in Galveston, Texas.
What medical group is Dr. John William Longwell part of?
Dr. Longwell is linked to UTMB Faculty Group Practice.
Does Dr. John William Longwell accept Medicare?
Yes. CMS data shows Dr. Longwell billed Medicare for 13 services in 2024, and Dr. Longwell accepts Medicare assignment.
What is Dr. John William Longwell's MIPS score?
Dr. Longwell's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. John William Longwell see?
CMS counts 70 Medicare patients who saw Dr. Longwell in 2024, with an average age of 72.
Is Dr. John William Longwell board certified?
Yes. Dr. Longwell is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. John William Longwell bill to Medicare?
In 2024, Dr. Longwell's most billed Medicare services were ultrasound (76942).
Where did Dr. John William Longwell go to medical school?
Dr. Longwell graduated from UTMB Health in 1998.
Has Dr. John William Longwell received payments from drug or device companies?
CMS Open Payments shows $1,118 in general payments to Dr. Longwell from 4 companies from 2019 to 2024. The largest total came from Pacira Pharmaceuticals Incorporated.
How long has Dr. John William Longwell been practicing?
Dr. Longwell graduated from medical school in 1998, 28 years ago.
Does Dr. John William Longwell do research?
Dmand AI links 1 publication to Dr. Longwell.
What insurance does Dr. John William Longwell accept?
Dr. Longwell is in network with 18 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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