Dr. Benjamin David Longwell, DO
- Medicare services, 2024
- 46
- Medicare patients, 2024
- 156
- Hospital affiliations
- 2
- Industry payments
- $17
- Medical groups
- 2
- Practice address
- 2540 East St, Concord, CA 94520
- Practice phone
- Call (925) 682-8200
- 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
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. Benjamin David Longwell is an anesthesiologist in Concord, California
Dr. Longwell practices at Concord Medical Center in Concord, California, part of John Muir Health.
Dr. Longwell's NPI, 1548623671, was assigned on April 5, 2016. Dr. Longwell graduated from Pcom in 2016. Dr. Longwell holds California license 20A18376.
- NPI
- 1548623671NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981015740
- NPI enumeration date
- April 5, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 682-8200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Benjamin David Longwell practices at Concord Medical Center in Concord, California
Dr. Longwell's primary practice is Concord Medical Center, at 2540 East St, Concord, CA 94520 in Contra Costa County. The practice phone is (925) 682-8200.
- Concord Medical Center2540 East St, Concord, CA 94520 · Contra Costa CountyPhone(925) 682-8200
Source: Dmand AI Affiliation Data
Dr. Benjamin David Longwell is affiliated with 2 sites of care and 2 medical groups
Dr. Longwell's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dr. Longwell is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is CEP America. Dmand AI also links Dr. Longwell 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. Benjamin David 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 |
|---|---|
| Concord Medical Center | Available with a free account |
| +1 more site and 1 medical group | 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 John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Benjamin David Longwell is one of 6,593 anesthesiologists in California
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: California and District of Columbia.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- District of Columbia license
Anesthesiologists near Dr. Longwell
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. Benjamin David Longwell billed Medicare for 46 services in 2024
CMS data shows 46 Medicare services from Dr. Longwell across 3 procedure codes in 2024, for 156 Medicare patients. Medicare paid $8,909 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Longwell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 572024: 4619%
- Surgery
- 2023: 172024: 0100%
Dr. Longwell compared with the California median for anesthesiologists, 2024
- Dr. Longwell
- California median
- Medicare services
- 46vs 7236% below
- Medicare patients
- 156vs 1439% above
Medians across 5,562 anesthesiologists in California 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 California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Benjamin David Longwell treated 156 Medicare patients in 2024, average age 75
CMS counts 156 Medicare patients who saw Dr. Longwell in 2024. The largest group is 75 to 84, with 65 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 26% are also on Medicaid. Their average risk score is 1.75, 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 60, with 39% women.
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
- Women7447%
- Men8253%
Chronic conditions among Dr. Longwell's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Diabetes48%
- Chronic kidney disease44%
- Atrial fibrillation37%
- Ischemic heart disease31%
- Mood disorders29%
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 60
Patient panel by sex, all payers
- Women39%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Benjamin David Longwell takes part in Medicare
Dr. Longwell 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Benjamin David Longwell received $17 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Longwell from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $17.
Companies that paid Dr. Longwell the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Benjamin David Longwell graduated from Pcom
Dr. Longwell graduated from Pcom in 2016.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Benjamin David Longwell accepts plans from 1 insurance carrier
Dr. Longwell is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Benjamin David 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) |
| 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. Benjamin David 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. Benjamin David Longwell's NPI number?
Dr. Benjamin David Longwell's NPI number is 1548623671. It was assigned on April 5, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Benjamin David Longwell?
Dr. Benjamin David Longwell is an anesthesiologist in Concord, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Benjamin David Longwell practice?
Dr. Longwell practices at 2540 East St, Concord, CA 94520. Dr. Longwell's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dmand AI also links Dr. Longwell to 1 medical group.
What is Dr. Benjamin David Longwell's office phone number?
The practice phone on file for Dr. Longwell is (925) 682-8200.
What is Dr. Benjamin David Longwell's medical license number?
Dr. Longwell holds California license 20A18376, one of the licenses on file in 2 states.
Which states has Dr. Benjamin David Longwell been licensed in?
Dmand AI has state licenses on file for Dr. Longwell in California (2020 to 2026) and District of Columbia (2016 to 2020).
Which hospitals is Dr. Benjamin David Longwell affiliated with?
Dr. Longwell practices at Concord Medical Center in Concord, California. Dr. Longwell is also affiliated with John Muir Medical Center, Walnut Creek.
What medical group is Dr. Benjamin David Longwell part of?
Dr. Longwell is linked to CEP America. Dmand AI links Dr. Longwell to 1 more medical group.
Does Dr. Benjamin David Longwell accept Medicare?
Yes. CMS data shows Dr. Longwell billed Medicare for 46 services in 2024, and Dr. Longwell accepts Medicare assignment.
How many Medicare patients does Dr. Benjamin David Longwell see?
CMS counts 156 Medicare patients who saw Dr. Longwell in 2024, with an average age of 75.
Show 6 more questionsShow fewer questions
Is Dr. Benjamin David Longwell board certified?
Yes. Dr. Longwell is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Benjamin David Longwell bill to Medicare?
In 2024, Dr. Longwell's most billed Medicare services were anesthesia (00731), anesthesia (00840) and anesthesia (01922).
Where did Dr. Benjamin David Longwell go to medical school?
Dr. Longwell graduated from Pcom in 2016.
Has Dr. Benjamin David Longwell received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Dr. Longwell from 1 company from 2023 to 2023. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Benjamin David Longwell been practicing?
Dr. Longwell graduated from medical school in 2016, 10 years ago.
What insurance does Dr. Benjamin David Longwell accept?
Dr. Longwell is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to anesthesiology practices?
See anesthesiologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card