Dr. Mark M. Lessner, MD
- Medicare services, 2023
- 20
- Part D claims, 2024
- 50
- Industry payments
- $213
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 214 West Main Street, Somerton, AZ 85350
- Practice phone
- Call (928) 627-1120
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Luis Walk-In Clinic - Somerton (W Main St)
Rural Health Clinic - Independent · Somerton, Arizona
Find Dr. Lessner'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. Mark M. Lessner is a pediatrician in Somerton, Arizona
Dr. Lessner practices at San Luis Walk-In Clinic - Somerton (W Main St) in Somerton, Arizona.
Dr. Lessner's NPI, 1497857999, was assigned on September 4, 2006. Dr. Lessner graduated from University of Arizona College of Medicine in 1975. Dr. Lessner holds California license 33868.
- NPI
- 1497857999NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961485859
- NPI enumeration date
- September 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (928) 627-1120
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark M. Lessner practices at San Luis Walk-in Clinic - Somerton (W Main St) in Somerton, Arizona
Dr. Lessner's primary practice is San Luis Walk-in Clinic - Somerton (W Main St), at 214 West Main Street, Somerton, AZ 85350. The practice phone is (928) 627-1120.
- San Luis Walk-in Clinic - Somerton (W Main St)214 West Main Street, Somerton, AZ 85350Phone(928) 627-1120
Source: Dmand AI Affiliation Data
Dr. Mark M. Lessner is affiliated with 2 sites of care and 2 medical groups
Dr. Lessner's primary practice is San Luis Walk-In Clinic - Somerton (W Main St) in Somerton, Arizona. The medical group on file is San Luis Walk-In Clinic, Inc. Dmand AI also links Dr. Lessner to 1 more rural health clinic and 1 medical group, each named with a free account. Dr. Lessner's employer is on file too: a rural health clinic (rhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark M. Lessner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lessner practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Luis Walk-In Clinic - Somerton (W Main St) | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark M. Lessner is one of 1,000 pediatricians in Arizona
Pediatrics is Dr. Lessner's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Lessner is licensed in California.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
Pediatricians near Dr. Lessner
Counts of pediatricians 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. Mark M. Lessner billed Medicare for 20 services in 2023
CMS data shows 20 Medicare services from Dr. Lessner across 1 procedure code in 2023, all of them office visits. Medicare paid $71 for them. Every service was in an office.
Dr. Lessner's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 382023: 2047%
Dr. Lessner compared with the Arizona median for pediatricians, 2023
- Dr. Lessner
- Arizona median
- Medicare services
- 20vs 9078% below
- Part D claims
- 37vs 132.8 times
Medians across 124 pediatricians in Arizona with Dmand AI profiles that report each measure.
Dr. Lessner's most billed Medicare procedure codes, 2023
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. Lessner?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lessner and other pediatricians in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark M. Lessner's patients have a median age of 14
Across all payers, Dmand AI patient panel data puts Dr. Lessner's median patient age at 14, with 50% women.
Dr. Lessner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 14
Patient panel by sex, all payers
- Women50%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Mark M. Lessner wrote 50 Medicare Part D claims in 2024
In 2024, Dr. Lessner wrote 50 Medicare Part D claims. 96% of them were for generic drugs. CMS names the drug for 37 of them, across 3 drugs with 11 or more claims each, at $181 in total drug cost. In 2018, CMS named 23 claims across 2 drugs.
Dr. Lessner's Part D claims by kind of drug, 2024
- Generic48 claims96%
- Brand-name and other2 claims4%
Dr. Lessner's most prescribed drugs by claims, 2024
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, 2018 to 2024
- 2018
- 2024
- Claims for drugs CMS names
- 2018: 232024: 3761%
Drugs named by CMS: 3 in 2024, 2 in 2018.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Mark M. Lessner takes part in Medicare
Dr. Lessner 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. Mark M. Lessner received $213 in industry payments from 2018 to 2023
CMS Open Payments shows 10 general payments to Dr. Lessner from 4 drug and device companies from 2018 to 2023. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $93.
General payments to Dr. Lessner by program year, 2018 to 2023
Companies that paid Dr. Lessner the most, 2018 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark M. Lessner graduated from University of Arizona College of Medicine
Dr. Lessner graduated from University of Arizona College of Medicine in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark M. Lessner'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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 |
| 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. Mark M. Lessner
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. Mark M. Lessner's NPI number?
Dr. Mark M. Lessner's NPI number is 1497857999. It was assigned on September 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark M. Lessner?
Dr. Mark M. Lessner is a pediatrician in Somerton, Arizona. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Mark M. Lessner practice?
Dr. Lessner practices at 214 West Main Street, Somerton, AZ 85350. Dr. Lessner's primary practice is San Luis Walk-In Clinic - Somerton (W Main St) in Somerton, Arizona. Dmand AI also links Dr. Lessner to 1 rural health clinic and 1 medical group.
What is Dr. Mark M. Lessner's office phone number?
The practice phone on file for Dr. Lessner is (928) 627-1120.
What is Dr. Mark M. Lessner's medical license number?
Dr. Lessner holds California license 33868.
What medical group is Dr. Mark M. Lessner part of?
Dr. Lessner is linked to San Luis Walk-In Clinic, Inc. Dmand AI links Dr. Lessner to 1 more medical group.
Does Dr. Mark M. Lessner accept Medicare?
Yes. CMS data shows Dr. Lessner billed Medicare for 20 services in 2023, and Dr. Lessner accepts Medicare assignment.
What services does Dr. Mark M. Lessner bill to Medicare?
In 2023, Dr. Lessner's most billed Medicare services were office visit, established patient (99211).
Where did Dr. Mark M. Lessner go to medical school?
Dr. Lessner graduated from University of Arizona College of Medicine in 1975.
What drugs does Dr. Mark M. Lessner prescribe most?
In 2024 Medicare Part D data, Dr. Lessner's most prescribed drugs by claims were Atorvastatin Calcium, Ezetimibe and Levothyroxine Sodium.
Has Dr. Mark M. Lessner received payments from drug or device companies?
CMS Open Payments shows $213 in general payments to Dr. Lessner from 4 companies from 2018 to 2023. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Mark M. Lessner been practicing?
Dr. Lessner graduated from medical school in 1975, 51 years ago.
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