Denise Smith Johnson, PA-C
- Medicare patients, 2024
- 118
- Part D claims, 2024
- 532
- Industry payments
- $769
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 3600 Leonardtown Rd Suite 103 Suite 103, Waldorf, MD 20601-3647
- Practice phone
- Call (301) 843-2223
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Asthma Allergy And Sinus Center
Medical specialty practice · Waldorf, Maryland
Find Denise Johnson'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.
Denise Smith Johnson is a physician assistant in Waldorf, Maryland
Denise Johnson practices at Asthma Allergy And Sinus Center in Waldorf, Maryland.
Denise Johnson's NPI, 1124226147, was assigned on July 11, 2007. Denise Johnson holds Maryland license C0002293.
- NPI
- 1124226147NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3173812484
- NPI enumeration date
- July 11, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (301) 843-2223
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Denise Smith Johnson practices at Asthma Allergy and Sinus Center in Waldorf, Maryland
Denise Johnson's primary practice is Asthma Allergy and Sinus Center, at 3600 Leonardtown Rd Suite 103 Suite 103, Waldorf, MD 20601-3647. The practice phone is (301) 843-2223.
- Asthma Allergy and Sinus Center3600 Leonardtown Rd Suite 103 Suite 103, Waldorf, MD 20601-3647Phone(301) 843-2223
Source: Dmand AI Affiliation Data
Denise Smith Johnson is affiliated with 2 sites of care and 2 medical groups
Denise Johnson's primary practice is Asthma Allergy And Sinus Center in Waldorf, Maryland. The medical group on file is Asthma Allergy and Sinus Center. Dmand AI also links Denise Johnson to 1 more group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Denise Smith Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Denise Johnson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Asthma Allergy And Sinus Center | 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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Denise Smith Johnson is one of 2,452 physician assistants in Maryland
Physician assistant is Denise Johnson's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Dmand AI has Denise Johnson's licenses on file in 2 states: Maryland and District of Columbia.
Specialties and state licenses
- Physician assistant, MarylandPrimary
- District of Columbia license
Physician assistants near Denise Johnson
Counts of physician assistants 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
Denise Smith Johnson treated 118 Medicare patients in 2024, average age 71
CMS counts 118 Medicare patients who saw Denise Johnson in 2024. The largest group is 65 to 74, with 64 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Denise Johnson's median patient age at 34, with 67% women.
Denise Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Denise Johnson's Medicare patients by sex, 2024
- Women8875%
- Men3025%
Chronic conditions among Denise Johnson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Asthma49%
- Diabetes31%
- COPD21%
- Mood disorders19%
- Anxiety18%
Share of Medicare patients with each condition. A patient can have several.
Denise Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 34
Patient panel by sex, all payers
- Women67%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Denise Smith Johnson wrote 532 Medicare Part D claims in 2024
In 2024, Denise Johnson wrote 532 Medicare Part D claims for 99 patients. 72% of them were for generic drugs.
Denise Johnson's Part D claims by kind of drug, 2024
- Generic384 claims72%
- Brand-name148 claims28%
Drug classes CMS tracks in Denise Johnson's Part D claims, 2024
- Antibiotics4%20 of 532 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Denise Smith Johnson takes part in Medicare
Denise Johnson 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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Denise Smith Johnson received $769 in industry payments in 2025
CMS Open Payments shows 30 general payments to Denise Johnson from 11 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $192.
Companies that paid Denise Johnson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Denise Smith Johnson'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 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) |
| 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 Denise Smith Johnson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Denise Smith Johnson's NPI number?
Denise Smith Johnson's NPI number is 1124226147. It was assigned on July 11, 2007, and it is active in the NPI Registry.
What does Denise Smith Johnson specialize in?
Denise Smith Johnson is a physician assistant in Waldorf, Maryland. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Denise Smith Johnson practice?
Denise Johnson practices at 3600 Leonardtown Rd Suite 103 Suite 103, Waldorf, MD 20601-3647. Denise Johnson's primary practice is Asthma Allergy And Sinus Center in Waldorf, Maryland. Dmand AI also links Denise Johnson to 1 group practice or clinic and 1 medical group.
What is Denise Smith Johnson's office phone number?
The practice phone on file for Denise Johnson is (301) 843-2223.
What is Denise Smith Johnson's medical license number?
Denise Johnson holds Maryland license C0002293, one of the licenses on file in 2 states.
Which states has Denise Smith Johnson been licensed in?
Dmand AI has state licenses on file for Denise Johnson in Maryland and District of Columbia.
What medical group is Denise Smith Johnson part of?
Denise Johnson is linked to Asthma Allergy and Sinus Center. Dmand AI links Denise Johnson to 1 more medical group.
Does Denise Smith Johnson accept Medicare?
Yes. CMS lists Denise Johnson as accepting Medicare assignment.
How many Medicare patients does Denise Smith Johnson see?
CMS counts 118 Medicare patients who saw Denise Johnson in 2024, with an average age of 71.
Has Denise Smith Johnson received payments from drug or device companies?
CMS Open Payments shows $769 in general payments to Denise Johnson from 11 companies from 2025 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Denise Smith Johnson been practicing?
Denise Johnson graduated from medical school in 2000, 26 years ago.
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