Dr. Ann Katherine John, MD
- Medicare services, 2024
- 201
- Medicare patients, 2024
- 193
- Hospital affiliations
- 2
- Industry payments
- $1,969
- Medical groups
- 6
- Practice address
- 600 N Union Ave, New Braunfels, TX 78130
- Practice phone
- Call (830) 606-9111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Christus Santa Rosa Hospital-New Braunfels
New Braunfels, Texas
Find Dr. John'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. Ann Katherine John is an anesthesiologist in New Braunfels, Texas
Dr. John practices at Christus Santa Rosa Hospital-New Braunfels in New Braunfels, Texas.
Dr. John's NPI, 1154532307, was assigned on May 26, 2007. Dr. John graduated from UTMB Health in 2004. Dr. John holds Texas license M9382.
- NPI
- 1154532307NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244380947
- NPI enumeration date
- May 26, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (830) 606-9111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ann Katherine John practices at Christus Santa Rosa Hospital-New Braunfels in New Braunfels, Texas
Dr. John's primary practice is Christus Santa Rosa Hospital-New Braunfels, at 600 N Union Ave, New Braunfels, TX 78130 in Comal County. The practice phone is (830) 606-9111.
- Christus Santa Rosa Hospital-New Braunfels600 N Union Ave, New Braunfels, TX 78130 · Comal CountyPhone(830) 606-9111
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ann Katherine John is affiliated with 7 sites of care and 6 medical groups
Dr. John's primary practice is Christus Santa Rosa Hospital-New Braunfels in New Braunfels, Texas. Dr. John is also affiliated with St. David's Medical Center. The medical group on file is Austin Anesthesiology Group. Dmand AI also links Dr. John to 1 more hospital, 5 medical groups and 4 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ann Katherine John's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. John practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Christus Santa Rosa Hospital-New Braunfels | Available with a free account |
| +6 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ann Katherine John is one of 4,073 anesthesiologists in Texas
Anesthesiology is Dr. John's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. John is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. John's licenses on file in 2 states: Texas and Colorado.
Specialties and state licenses
- Anesthesiology, TexasPrimary
- Colorado license
Anesthesiologists near Dr. John
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. Ann Katherine John billed Medicare for 201 services in 2024
CMS data shows 201 Medicare services from Dr. John across 7 procedure codes in 2024, for 193 Medicare patients. Medicare paid $34,598 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. John's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 652024: 183182%
- Surgery
- 2023: 452024: 1860%
- Imaging
- 2023: 242024: 0100%
- Tests and treatments
- 2023: 232024: 0100%
Dr. John compared with the Texas median for anesthesiologists, 2024
- Dr. John
- Texas median
- Medicare services
- 201vs 712.8 times
- Medicare patients
- 193vs 13246% above
Medians across 3,710 anesthesiologists in Texas with Dmand AI profiles that report each measure.
Dr. John'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. John and other anesthesiologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ann Katherine John treated 193 Medicare patients in 2024, average age 76
CMS counts 193 Medicare patients who saw Dr. John in 2024. The largest group is 65 to 74, with 82 patients. 75% of them have atrial fibrillation, and 75% have high blood pressure. Their average risk score is 1.51, 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. John's median patient age at 78, with 44% women.
Dr. John's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. John's Medicare patients by sex, 2024
- Women8041%
- Men11359%
Chronic conditions among Dr. John's Medicare patients, 2024
- Atrial fibrillation75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease64%
- Arthritis54%
- Heart failure50%
- Diabetes32%
- Chronic kidney disease30%
Share of Medicare patients with each condition. A patient can have several.
Dr. John's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Ann Katherine John takes part in Medicare
Dr. John 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)
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Dr. Ann Katherine John received $1,969 in industry payments from 2016 to 2025
CMS Open Payments shows 44 general payments to Dr. John from 9 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Biosense Webster, Inc. paid the most, $588.
General payments to Dr. John by program year, 2016 to 2025
Companies that paid Dr. John 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. Ann Katherine John graduated from UTMB Health
Dr. John graduated from UTMB Health in 2004.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Ann Katherine John accepts plans from 20 insurance carriers
Dr. John is in network with 20 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- HCSC
- +12 more carriersWith a free account
Plan types Dr. John accepts, by number of carriers
- PPO13
- HMO10
- Medicare8
- POS7
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Ann Katherine John'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Ann Katherine John
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. Ann Katherine John's NPI number?
Dr. Ann Katherine John's NPI number is 1154532307. It was assigned on May 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ann Katherine John?
Dr. Ann Katherine John is an anesthesiologist in New Braunfels, Texas. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Ann Katherine John practice?
Dr. John practices at 600 N Union Ave, New Braunfels, TX 78130. Dr. John's primary practice is Christus Santa Rosa Hospital-New Braunfels in New Braunfels, Texas. Dmand AI also links Dr. John to 1 hospital, 5 medical groups and 4 group practices and clinics.
What is Dr. Ann Katherine John's office phone number?
The practice phone on file for Dr. John is (830) 606-9111.
What is Dr. Ann Katherine John's medical license number?
Dr. John holds Texas license M9382, one of the licenses on file in 2 states.
Which states has Dr. Ann Katherine John been licensed in?
Dmand AI has state licenses on file for Dr. John in Texas (2008 to 2026) and Colorado (2018 to 2019).
Which hospitals is Dr. Ann Katherine John affiliated with?
Dr. John is affiliated with St. David's Medical Center. Dmand AI links Dr. John to 1 more hospital.
What medical group is Dr. Ann Katherine John part of?
Dr. John is linked to Austin Anesthesiology Group. Dmand AI links Dr. John to 5 more medical groups.
Does Dr. Ann Katherine John accept Medicare?
Yes. CMS data shows Dr. John billed Medicare for 201 services in 2024, and Dr. John accepts Medicare assignment.
How many Medicare patients does Dr. Ann Katherine John see?
CMS counts 193 Medicare patients who saw Dr. John in 2024, with an average age of 76.
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Is Dr. Ann Katherine John board certified?
Yes. Dr. John is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Ann Katherine John bill to Medicare?
In 2024, Dr. John's most billed Medicare services were anesthesia (00537), anesthesia (01922) and anesthesia (00530).
Where did Dr. Ann Katherine John go to medical school?
Dr. John graduated from UTMB Health in 2004.
Has Dr. Ann Katherine John received payments from drug or device companies?
CMS Open Payments shows $1,969 in general payments to Dr. John from 9 companies from 2016 to 2025. The largest total came from Biosense Webster, Inc.
How long has Dr. Ann Katherine John been practicing?
Dr. John graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Ann Katherine John accept?
Dr. John is in network with 20 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.
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