Dr. John A. Demersseman, MD
- Medicare services, 2017
- 410
- Part D claims, 2018
- 125
- Industry payments
- $371
- Affiliated sites
- 1
- Insurance carriers
- 1
- Practice address
- 555 E Tachevah Dr Suite 2w201 Suite 2w201, Palm Springs, CA 92262
- Practice phone
- Call (760) 323-9309
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Bednar & Demersseman Medical Associates
Physician office · Palm Springs, California
Find Dr. Demersseman'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 A. Demersseman is a gynecology physician in Palm Springs, California
Dr. Demersseman practices at Bednar & Demersseman Medical Associates in Palm Springs, California.
Dr. Demersseman's NPI, 1194785758, was assigned on March 27, 2006. Dr. Demersseman graduated from University of Colorado Anschutz Medical Campus in 1970. Dr. Demersseman holds California license G28169.
- NPI
- 1194785758NPI Registry (opens in a new tab)
- NPI enumeration date
- March 27, 2006
- NPI status
- Active
- Practice phone
- (760) 323-9309
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1970
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John A. Demersseman practices at Bednar & Demersseman Medical Associates in Palm Springs, California
Dr. Demersseman's primary practice is Bednar & Demersseman Medical Associates, at 555 E Tachevah Dr Suite 2w201 Suite 2w201, Palm Springs, CA 92262. The practice phone is (760) 323-9309.
- Bednar & Demersseman Medical Associates555 E Tachevah Dr Suite 2w201 Suite 2w201, Palm Springs, CA 92262Phone(760) 323-9309
Source: Dmand AI Affiliation Data
Dr. John A. Demersseman is affiliated with 1 site of care
Dr. Demersseman's primary practice is Bednar & Demersseman Medical Associates in Palm Springs, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John A. Demersseman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Demersseman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bednar & Demersseman Medical Associates | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John A. Demersseman is one of 297 gynecology physicians in California
Gynecology is Dr. Demersseman's primary specialty in the NPI Registry, under taxonomy code 207VG0400X. Dr. Demersseman is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Demersseman is licensed in California.
Specialties and state licenses
- Gynecology, CaliforniaPrimary
Gynecology physicians near Dr. Demersseman
Counts of gynecology physicians 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 A. Demersseman billed Medicare for 410 services in 2017
CMS data shows 410 Medicare services from Dr. Demersseman across 8 procedure codes in 2017. Medicare paid $25,046 for them. Every service was in an office.
Dr. Demersseman's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 1552017: 20130%
- Other services
- 2016: 1972017: 17312%
- Imaging
- 2016: 252017: 3644%
Dr. Demersseman compared with the California median for gynecology physicians, 2017
- Dr. Demersseman
- California median
- Medicare services
- 410vs 1043.9 times
- Part D claims
- 125vs 602.1 times
Medians across 253 gynecology physicians in California with Dmand AI profiles that report each measure.
Dr. Demersseman's most billed Medicare procedure codes, 2017
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. Demersseman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Demersseman and other gynecology physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John A. Demersseman's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Demersseman's median patient age at 63, with 100% women.
Dr. Demersseman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. John A. Demersseman wrote 125 Medicare Part D claims in 2018
In 2018, Dr. Demersseman wrote 125 Medicare Part D claims. They cover 4 drugs, with $7,037 in total drug cost. In 2017, CMS named 378 claims across 11 drugs.
Dr. Demersseman's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 3782018: 12567%
Drugs named by CMS: 4 in 2018, 11 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. John A. Demersseman received $371 in industry payments from 2016 to 2017
CMS Open Payments shows 20 general payments to Dr. Demersseman from 8 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $142.
General payments to Dr. Demersseman by program year, 2016 to 2017
Companies that paid Dr. Demersseman the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John A. Demersseman has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Demersseman, most recently ACOG Fellow in 2012.
Awards and honors for Dr. Demersseman
- 2012
- ACOG Fellow
- 2007
- Palm Springs Life Magazine
- Undated
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. John A. Demersseman graduated from University of Colorado Anschutz Medical Campus
Dr. Demersseman graduated from University of Colorado Anschutz Medical Campus in 1970. Dr. Demersseman is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. John A. Demersseman accepts plans from 1 insurance carrier
Dr. Demersseman is in network with 1 carrier, including HCSC. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- HCSC
Plan types Dr. Demersseman accepts, by number of carriers
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. John A. Demersseman'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 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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 A. Demersseman
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 A. Demersseman's NPI number?
Dr. John A. Demersseman's NPI number is 1194785758. It was assigned on March 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John A. Demersseman?
Dr. John A. Demersseman is a gynecology physician in Palm Springs, California. The primary specialty in the NPI Registry is Gynecology Physician (taxonomy code 207VG0400X).
Where does Dr. John A. Demersseman practice?
Dr. Demersseman practices at 555 E Tachevah Dr Suite 2w201 Suite 2w201, Palm Springs, CA 92262. Dr. Demersseman's primary practice is Bednar & Demersseman Medical Associates in Palm Springs, California.
What is Dr. John A. Demersseman's office phone number?
The practice phone on file for Dr. Demersseman is (760) 323-9309.
What is Dr. John A. Demersseman's medical license number?
Dr. Demersseman holds California license G28169.
Does Dr. John A. Demersseman accept Medicare?
Yes. CMS data shows Dr. Demersseman billed Medicare for 410 services in 2017.
Is Dr. John A. Demersseman board certified?
Yes. Dr. Demersseman is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What services does Dr. John A. Demersseman bill to Medicare?
In 2017, Dr. Demersseman's most billed Medicare services were medicare service (G0101), office visit, established patient (99213) and office visit, established patient (99214).
Where did Dr. John A. Demersseman go to medical school?
Dr. Demersseman graduated from University of Colorado Anschutz Medical Campus in 1970.
What drugs does Dr. John A. Demersseman prescribe most?
In 2018 Medicare Part D data, Dr. Demersseman's most prescribed drugs by claims were Estradiol, Progesterone and Levothyroxine Sodium.
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Has Dr. John A. Demersseman received payments from drug or device companies?
CMS Open Payments shows $371 in general payments to Dr. Demersseman from 8 companies from 2016 to 2017. The largest total came from Abbvie Inc.
How long has Dr. John A. Demersseman been practicing?
Dr. Demersseman graduated from medical school in 1970, 56 years ago.
What insurance does Dr. John A. Demersseman accept?
Dr. Demersseman is in network with 1 carrier, including HCSC. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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