Dr. Mary F. Fredenberg, MD
- Medicare services, 2024
- 5,162
- Medicare patients, 2024
- 811
- Part D claims, 2024
- 896
- MIPS score, 2024
- 100
- Industry payments
- $12,364
- Practice address
- 10200 N 92nd St, Scottsdale, AZ 85258
- Practice phone
- Call (602) 494-1817
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southwest Skin Specialists
Scottsdale, Arizona
Find Dr. Fredenberg'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. Mary F. Fredenberg is a dermatologist in Scottsdale, Arizona
Dr. Fredenberg practices at Southwest Skin Specialists in Scottsdale, Arizona.
Dr. Fredenberg's NPI, 1134140999, was assigned on July 21, 2006. Dr. Fredenberg graduated from University of Arizona College of Medicine in 1982. Dr. Fredenberg holds Arizona license 16095.
- NPI
- 1134140999NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557356086
- NPI enumeration date
- July 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (602) 494-1817
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary F. Fredenberg practices at Southwest Skin Specialists in Scottsdale, Arizona
Dr. Fredenberg's primary practice is Southwest Skin Specialists, at 10200 N 92nd St, Scottsdale, AZ 85258 in Maricopa County. The practice phone is (602) 494-1817.
- Southwest Skin Specialists10200 N 92nd St, Scottsdale, AZ 85258 · Maricopa CountyPhone(602) 494-1817
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mary F. Fredenberg is affiliated with 3 sites of care and 2 medical groups
Dr. Fredenberg's primary practice is Southwest Skin Specialists in Scottsdale, Arizona. The medical group on file is Southwest Skin Specialists. Dmand AI also links Dr. Fredenberg to 2 more group practices and clinics and 1 medical group, 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. Mary F. Fredenberg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fredenberg practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southwest Skin Specialists | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary F. Fredenberg is one of 269 dermatologists in Arizona
Dermatology is Dr. Fredenberg's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Fredenberg is licensed in Arizona.
Specialties and state licenses
- Dermatology, ArizonaPrimary
Dermatologists near Dr. Fredenberg
Counts of dermatologists 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. Mary F. Fredenberg billed Medicare for 5,162 services in 2024
CMS data shows 5,162 Medicare services from Dr. Fredenberg across 13 procedure codes in 2024, for 811 Medicare patients. Medicare paid $221,643 for them. Every service was in an office.
Dr. Fredenberg's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 3,5722024: 3,6302%
- Office and hospital visits
- 2023: 1,4642024: 1,4811%
- Drugs given in the office
- 2023: 862024: 5141%
- Tests and treatments
- 2023: 202024: 0100%
Dr. Fredenberg compared with the Arizona median for dermatologists, 2024
- Dr. Fredenberg
- Arizona median
- Medicare services
- 5,162vs 3,56645% above
- Medicare patients
- 811vs 69816% above
- Part D claims
- 722vs 47054% above
Medians across 254 dermatologists in Arizona with Dmand AI profiles that report each measure.
Dr. Fredenberg'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. Fredenberg?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fredenberg and other dermatologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary F. Fredenberg treated 811 Medicare patients in 2024, average age 76
CMS counts 811 Medicare patients who saw Dr. Fredenberg in 2024. The largest group is 65 to 74, with 372 patients. 75% of them have high cholesterol, and 67% have high blood pressure. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Fredenberg's median patient age at 75, with 63% women.
Dr. Fredenberg's Medicare patients by age, 2024
Dr. Fredenberg's Medicare patients by sex, 2024
- Women51864%
- Men29336%
Chronic conditions among Dr. Fredenberg's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis50%
- Ischemic heart disease29%
- Chronic kidney disease25%
- Osteoporosis23%
- Anxiety21%
- Diabetes20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Fredenberg's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women63%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary F. Fredenberg wrote 896 Medicare Part D claims in 2024
In 2024, Dr. Fredenberg wrote 896 Medicare Part D claims for 372 patients. 94% of them were for generic drugs. CMS names the drug for 722 of them, across 18 drugs with 11 or more claims each, at $23,269 in total drug cost. In 2023, CMS named 692 claims across 22 drugs.
Dr. Fredenberg's Part D claims by kind of drug, 2024
- Generic843 claims94%
- Brand-name53 claims6%
Dr. Fredenberg'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.
Drug classes CMS tracks in Dr. Fredenberg's Part D claims, 2024
- Antibiotics9%78 of 896 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6922024: 7224%
Drugs named by CMS: 18 in 2024, 22 in 2023.
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
Dr. Mary F. Fredenberg scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Fredenberg for performance year 2024, reported as part of a group. Dr. Fredenberg accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 846 procedures of removal of skin lesions by Dr. Fredenberg, more than 92% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Fredenberg's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Fredenberg ranks in Medicare procedure volume
- Removal of skin lesions
- 92nd percentile846 procedures
- Skin biopsy
- 70th percentile55 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mary F. Fredenberg received $12,364 in industry payments from 2016 to 2025
CMS Open Payments shows 648 general payments to Dr. Fredenberg from 41 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Abbvie Inc. paid the most, $1,882.
General payments to Dr. Fredenberg by program year, 2016 to 2025
General payments to Dr. Fredenberg by kind, 2016 to 2025
- Food and beverage$11,45693%
- Education$9087%
Companies that paid Dr. Fredenberg 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. Mary F. Fredenberg graduated from University of Arizona College of Medicine
Dr. Fredenberg graduated from University of Arizona College of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mary F. Fredenberg'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) |
| 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Mary F. Fredenberg
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. Mary F. Fredenberg's NPI number?
Dr. Mary F. Fredenberg's NPI number is 1134140999. It was assigned on July 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary F. Fredenberg?
Dr. Mary F. Fredenberg is a dermatologist in Scottsdale, Arizona. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Mary F. Fredenberg practice?
Dr. Fredenberg practices at 10200 N 92nd St, Scottsdale, AZ 85258. Dr. Fredenberg's primary practice is Southwest Skin Specialists in Scottsdale, Arizona. Dmand AI also links Dr. Fredenberg to 2 group practices and clinics and 1 medical group.
What is Dr. Mary F. Fredenberg's office phone number?
The practice phone on file for Dr. Fredenberg is (602) 494-1817.
What is Dr. Mary F. Fredenberg's medical license number?
Dr. Fredenberg holds Arizona license 16095.
What medical group is Dr. Mary F. Fredenberg part of?
Dr. Fredenberg is linked to Southwest Skin Specialists. Dmand AI links Dr. Fredenberg to 1 more medical group.
Does Dr. Mary F. Fredenberg accept Medicare?
Yes. CMS data shows Dr. Fredenberg billed Medicare for 5,162 services in 2024, and Dr. Fredenberg accepts Medicare assignment.
What is Dr. Mary F. Fredenberg's MIPS score?
Dr. Fredenberg's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mary F. Fredenberg see?
CMS counts 811 Medicare patients who saw Dr. Fredenberg in 2024, with an average age of 76.
What services does Dr. Mary F. Fredenberg bill to Medicare?
In 2024, Dr. Fredenberg's most billed Medicare services were surgery: skin and soft tissue (17003), office visit, established patient (99213) and surgery: skin and soft tissue (17110).
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Where did Dr. Mary F. Fredenberg go to medical school?
Dr. Fredenberg graduated from University of Arizona College of Medicine in 1982.
What drugs does Dr. Mary F. Fredenberg prescribe most?
In 2024 Medicare Part D data, Dr. Fredenberg's most prescribed drugs by claims were Minoxidil, Triamcinolone Acetonide and Clotrimazole-Betamethasone.
Has Dr. Mary F. Fredenberg received payments from drug or device companies?
CMS Open Payments shows $12,364 in general payments to Dr. Fredenberg from 41 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Mary F. Fredenberg been practicing?
Dr. Fredenberg graduated from medical school in 1982, 44 years ago.
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