Dr. John Warren Porter, MD
- Medicare services, 2024
- 223
- Medicare patients, 2024
- 373
- MIPS score, 2024
- 89
- Hospital affiliations
- 2
- Industry payments
- $43
- Practice address
- 18220 State Highway 249, Houston, TX 77070
- Practice phone
- Call (281) 477-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Porter'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. John Warren Porter is an anesthesiologist in Houston, Texas
Dr. Porter practices at Houston Methodist Willowbrook Hospital in Houston, Texas, part of Houston Methodist.
Dr. Porter's NPI, 1992961437, was assigned on August 4, 2008. Dr. Porter graduated from OU College of Medicine in 2004. Dr. Porter holds Texas license N2736.
- NPI
- 1992961437NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729139365
- NPI enumeration date
- August 4, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (281) 477-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Warren Porter practices at Houston Methodist Willowbrook Hospital in Houston, Texas
Dr. Porter's primary practice is Houston Methodist Willowbrook Hospital, at 18220 State Highway 249, Houston, TX 77070 in Harris County. The practice phone is (281) 477-1000.
- Houston Methodist Willowbrook Hospital18220 State Highway 249, Houston, TX 77070 · Harris CountyPhone(281) 477-1000
Source: Dmand AI Affiliation Data
Dr. John Warren Porter is affiliated with 7 sites of care and 5 medical groups
Dr. Porter's primary practice is Houston Methodist Willowbrook Hospital in Houston, Texas, part of Houston Methodist. Dr. Porter is also affiliated with Houston Methodist Hospital. The medical group on file is US Anesthesia Partners. Dmand AI also links Dr. Porter to 5 more group practices and clinics and 4 medical groups, 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. John Warren Porter's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Porter practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Houston Methodist Willowbrook Hospital | Available with a free account |
| +6 more sites and 4 medical groups | 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. John Warren Porter is one of 4,073 anesthesiologists in Texas
Anesthesiology is Dr. Porter's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Porter is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Porter's licenses on file in 3 states: Texas, Oklahoma and Michigan.
Specialties and state licenses
- Anesthesiology, TexasPrimary
- Oklahoma license
- Michigan license
Anesthesiologists near Dr. Porter
Counts of anesthesiologists 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 Warren Porter billed Medicare for 223 services in 2024
CMS data shows 223 Medicare services from Dr. Porter across 6 procedure codes in 2024, for 373 Medicare patients. Medicare paid $14,439 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Porter compared with the Texas median for anesthesiologists, 2024
- Dr. Porter
- Texas median
- Medicare services
- 223vs 713.1 times
- Medicare patients
- 373vs 1322.8 times
Medians across 3,710 anesthesiologists in Texas with Dmand AI profiles that report each measure.
Dr. Porter'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. Porter?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Porter and other anesthesiologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Warren Porter treated 373 Medicare patients in 2024, average age 73
CMS counts 373 Medicare patients who saw Dr. Porter in 2024. The largest group is 65 to 74, with 176 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.06, 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. Porter's median patient age at 65, with 60% women.
Dr. Porter's Medicare patients by age, 2024
Dr. Porter's Medicare patients by sex, 2024
- Women19953%
- Men17447%
Chronic conditions among Dr. Porter's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Ischemic heart disease49%
- Diabetes45%
- Chronic kidney disease38%
- Heart failure35%
- Anxiety33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Porter'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
- Women60%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Warren Porter 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. Porter for performance year 2024, reported as part of a group. Dr. Porter accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Porter'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 Warren Porter received $43 in industry payments in 2025
CMS Open Payments shows 2 general payments to Dr. Porter from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Pacira Pharmaceuticals Incorporated paid the most, $25.
Companies that paid Dr. Porter the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Warren Porter graduated from OU College of Medicine
Dr. Porter graduated from OU College of Medicine in 2004.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. John Warren Porter accepts plans from 18 insurance carriers
Dr. Porter is in network with 18 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- +10 more carriersWith a free account
Plan types Dr. Porter accepts, by number of carriers
- PPO11
- HMO10
- Medicare7
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. John Warren Porter'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) |
| 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 Warren Porter
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 Warren Porter's NPI number?
Dr. John Warren Porter's NPI number is 1992961437. It was assigned on August 4, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. John Warren Porter?
Dr. John Warren Porter is an anesthesiologist in Houston, Texas. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. John Warren Porter practice?
Dr. Porter practices at 18220 State Highway 249, Houston, TX 77070. Dr. Porter's primary practice is Houston Methodist Willowbrook Hospital in Houston, Texas, part of Houston Methodist. Dmand AI also links Dr. Porter to 5 group practices and clinics and 4 medical groups.
What is Dr. John Warren Porter's office phone number?
The practice phone on file for Dr. Porter is (281) 477-1000.
What is Dr. John Warren Porter's medical license number?
Dr. Porter holds Texas license N2736, one of the licenses on file in 3 states.
Which states has Dr. John Warren Porter been licensed in?
Dmand AI has state licenses on file for Dr. Porter in Texas (2009 to 2026), Oklahoma (2008 to 2025) and Michigan (2008 to 2009).
Which hospitals is Dr. John Warren Porter affiliated with?
Dr. Porter practices at Houston Methodist Willowbrook Hospital in Houston, Texas. Dr. Porter is also affiliated with Houston Methodist Hospital.
What medical group is Dr. John Warren Porter part of?
Dr. Porter is linked to US Anesthesia Partners. Dmand AI links Dr. Porter to 4 more medical groups.
Does Dr. John Warren Porter accept Medicare?
Yes. CMS data shows Dr. Porter billed Medicare for 223 services in 2024, and Dr. Porter accepts Medicare assignment.
What is Dr. John Warren Porter's MIPS score?
Dr. Porter's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
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How many Medicare patients does Dr. John Warren Porter see?
CMS counts 373 Medicare patients who saw Dr. Porter in 2024, with an average age of 73.
Is Dr. John Warren Porter board certified?
Yes. Dr. Porter is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. John Warren Porter bill to Medicare?
In 2024, Dr. Porter's most billed Medicare services were anesthesia (00731), anesthesia (00811) and anesthesia (00813).
Where did Dr. John Warren Porter go to medical school?
Dr. Porter graduated from OU College of Medicine in 2004.
Has Dr. John Warren Porter received payments from drug or device companies?
CMS Open Payments shows $43 in general payments to Dr. Porter from 2 companies from 2025 to 2025. The largest total came from Pacira Pharmaceuticals Incorporated.
How long has Dr. John Warren Porter been practicing?
Dr. Porter graduated from medical school in 2004, 22 years ago.
What insurance does Dr. John Warren Porter accept?
Dr. Porter is in network with 18 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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