Michael F. Diffendall, OD
- Medicare patients, 2024
- 249
- Part D claims, 2024
- 45
- Industry payments
- $151
- Affiliated sites
- 3
- Medical groups
- 2
- Practice address
- 200 E Joppa Rd, Towson, MD 21286
- Practice phone
- Call (410) 296-7700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Adolph and Kalkstein Chiropractic
Towson, Maryland
Find Michael Diffendall'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.
Michael F. Diffendall is an optometrist in Towson, Maryland
Michael Diffendall practices at Adolph and Kalkstein Chiropractic in Towson, Maryland.
Michael Diffendall's NPI, 1184667057, was assigned on June 14, 2006. Michael Diffendall graduated from Pennsylvania College of Optometry in 1995. Michael Diffendall holds Maryland license TA1372.
- NPI
- 1184667057NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072728914
- NPI enumeration date
- June 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 296-7700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael F. Diffendall practices at Adolph and Kalkstein Chiropractic in Towson, Maryland
Michael Diffendall's primary practice is Adolph and Kalkstein Chiropractic, at 200 E Joppa Rd, Towson, MD 21286 in Baltimore County. The practice phone is (410) 296-7700.
- Adolph and Kalkstein Chiropractic200 E Joppa Rd, Towson, MD 21286 · Baltimore CountyPhone(410) 296-7700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Michael F. Diffendall is affiliated with 4 sites of care and 2 medical groups
Michael Diffendall's primary practice is Adolph and Kalkstein Chiropractic in Towson, Maryland. Dmand AI also links Michael Diffendall to 2 group practices and clinics, 2 medical groups and 1 physician office, 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 Michael F. Diffendall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Diffendall practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adolph and Kalkstein Chiropractic | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Michael F. Diffendall is one of 562 optometrists in Maryland
Optometrist is Michael Diffendall's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Michael Diffendall is licensed in Maryland.
Specialties and state licenses
- Optometrist, MarylandPrimary
Optometrists near Michael Diffendall
Counts of optometrists 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
Michael F. Diffendall treated 249 Medicare patients in 2024, average age 74
CMS counts 249 Medicare patients who saw Michael Diffendall in 2024. The largest group is 65 to 74, with 139 patients. 72% of them have high cholesterol, and 59% have high blood pressure. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Michael Diffendall's median patient age at 65, with 47% women.
Michael Diffendall's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Michael Diffendall's Medicare patients by sex, 2024
- Women13855%
- Men11145%
Chronic conditions among Michael Diffendall's Medicare patients, 2024
- High cholesterol72%
- High blood pressure59%
- Arthritis44%
- Mood disorders20%
- Anxiety19%
- Ischemic heart disease19%
- Depression18%
- Diabetes16%
Share of Medicare patients with each condition. A patient can have several.
Michael Diffendall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Michael F. Diffendall wrote 45 Medicare Part D claims in 2024
In 2024, Michael Diffendall wrote 45 Medicare Part D claims for 32 patients. 71% of them were for generic drugs.
Michael Diffendall's Part D claims by kind of drug, 2024
- Generic32 claims71%
- Brand-name13 claims29%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Michael F. Diffendall takes part in Medicare
Michael Diffendall 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.
Michael F. Diffendall received $151 in industry payments in 2025
CMS Open Payments shows 6 general payments to Michael Diffendall from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Tarsus Pharmaceuticals, Inc. paid the most, $113.
Companies that paid Michael Diffendall the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Michael F. Diffendall graduated from Pennsylvania College of Optometry
Michael Diffendall graduated from Pennsylvania College of Optometry in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Michael F. Diffendall'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 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 (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 Michael F. Diffendall
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Michael F. Diffendall's NPI number?
Michael F. Diffendall's NPI number is 1184667057. It was assigned on June 14, 2006, and it is active in the NPI Registry.
What does Michael F. Diffendall specialize in?
Michael F. Diffendall is an optometrist in Towson, Maryland. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Michael F. Diffendall practice?
Michael Diffendall practices at 200 E Joppa Rd, Towson, MD 21286. Michael Diffendall's primary practice is Adolph and Kalkstein Chiropractic in Towson, Maryland. Dmand AI also links Michael Diffendall to 2 group practices and clinics, 2 medical groups and 1 physician office.
What is Michael F. Diffendall's office phone number?
The practice phone on file for Michael Diffendall is (410) 296-7700.
What is Michael F. Diffendall's medical license number?
Michael Diffendall holds Maryland license TA1372.
Does Michael F. Diffendall accept Medicare?
Yes. CMS lists Michael Diffendall as accepting Medicare assignment.
How many Medicare patients does Michael F. Diffendall see?
CMS counts 249 Medicare patients who saw Michael Diffendall in 2024, with an average age of 74.
Where did Michael F. Diffendall go to medical school?
Michael Diffendall graduated from Pennsylvania College of Optometry in 1995.
Has Michael F. Diffendall received payments from drug or device companies?
CMS Open Payments shows $151 in general payments to Michael Diffendall from 3 companies from 2025 to 2025. The largest total came from Tarsus Pharmaceuticals, Inc.
How long has Michael F. Diffendall been practicing?
Michael Diffendall graduated from medical school in 1995, 31 years ago.
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