Dr. Anna Andreevna Klass, MD
- Part D claims, 2024
- 592
- Hospital affiliations
- 1
- Industry payments
- $238
- Medical group
- 1
- State license
- 1
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Klass' 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. Anna Andreevna Klass is a family medicine physician in Saint Louis, Missouri
Dr. Klass practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Dr. Klass' NPI, 1043898505, was assigned on March 29, 2021. Dr. Klass holds Missouri license 2024026908.
- NPI
- 1043898505NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890234355
- NPI enumeration date
- March 29, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 251-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Anna Andreevna Klass practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Dr. Klass' primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Dr. Anna Andreevna Klass is affiliated with 2 sites of care and 1 medical group
Dr. Klass' primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. The medical group on file is Mercy Clinic East Communities. Dmand AI also links Dr. Klass to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Anna Andreevna Klass' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klass practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
| +1 more affiliated site | 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 Mercy and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Anna Andreevna Klass is one of 2,412 family medicine physicians in Missouri
Family medicine is Dr. Klass' primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Klass is licensed in Missouri.
Specialties and state licenses
- Family medicine, MissouriPrimary
Family medicine physicians near Dr. Klass
Counts of family medicine physicians 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. Anna Andreevna Klass' patients have a median age of 51
Across all payers, Dmand AI patient panel data puts Dr. Klass' median patient age at 51, with 71% women.
Dr. Klass' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women71%
- Men29%
Source: Dmand AI Patient Panel Data
Dr. Anna Andreevna Klass wrote 592 Medicare Part D claims in 2024
In 2024, Dr. Klass wrote 592 Medicare Part D claims for 93 patients. 91% of them were for generic drugs. CMS names the drug for 304 of them, across 16 drugs with 11 or more claims each, at $2,728 in total drug cost. In 2023, CMS named 275 claims across 15 drugs.
Dr. Klass' Part D claims by kind of drug, 2024
- Generic536 claims91%
- Brand-name56 claims9%
Dr. Klass' 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. Klass' Part D claims, 2024
- Antibiotics3%19 of 592 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: 2752024: 30411%
Drugs named by CMS: 16 in 2024, 15 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. Anna Andreevna Klass offers telehealth to Medicare patients
Dr. Klass accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Klass as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (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. Anna Andreevna Klass received $238 in industry payments from 2024 to 2025
CMS Open Payments shows 7 general payments to Dr. Klass from 5 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $110.
General payments to Dr. Klass by program year, 2024 to 2025
Companies that paid Dr. Klass the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Anna Andreevna Klass'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 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)Doctors and Clinicians Utilization Data (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 Dr. Anna Andreevna Klass
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. Anna Andreevna Klass' NPI number?
Dr. Anna Andreevna Klass' NPI number is 1043898505. It was assigned on March 29, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Anna Andreevna Klass?
Dr. Anna Andreevna Klass is a family medicine physician in Saint Louis, Missouri. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Anna Andreevna Klass practice?
Dr. Klass practices at 615 New Ballas Road, Saint Louis, MO 63141. Dr. Klass' primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Dr. Klass to 1 group practice or clinic.
What is Dr. Anna Andreevna Klass' office phone number?
The practice phone on file for Dr. Klass is (314) 251-6000.
What is Dr. Anna Andreevna Klass' medical license number?
Dr. Klass holds Missouri license 2024026908.
Which hospitals is Dr. Anna Andreevna Klass affiliated with?
Dr. Klass practices at Mercy Hospital St. Louis in Saint Louis, Missouri.
What medical group is Dr. Anna Andreevna Klass part of?
Dr. Klass is linked to Mercy Clinic East Communities.
Does Dr. Anna Andreevna Klass accept Medicare?
Yes. CMS lists Dr. Klass as accepting Medicare assignment.
Does Dr. Anna Andreevna Klass offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Klass as offering telehealth services.
What drugs does Dr. Anna Andreevna Klass prescribe most?
In 2024 Medicare Part D data, Dr. Klass' most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Albuterol Sulfate Hfa.
Has Dr. Anna Andreevna Klass received payments from drug or device companies?
CMS Open Payments shows $238 in general payments to Dr. Klass from 5 companies from 2024 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Anna Andreevna Klass been practicing?
Dr. Klass graduated from medical school in 2021, 5 years ago.
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