Mallory Markwitz, LISW, LMSW
NPI 1902446305 · Clinical Social Worker · Hiawatha, IA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallory Markwitz, LISW, LMSW is a Clinical Social Worker provider in Hiawatha, IA (NPI 1902446305).
Provider details
- NPI number
- 1902446305
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LISW, LMSW
- Sex
- Female
- Sole proprietor
- No
- License
- 081611 (IA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
39 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy, 45 Minutes90834 | 23 | $73 |
| Psychiatric Diagnostic Evaluation90791 | 16 | $121 |
Typical Medicare-allowed amounts for these services range $73–$121 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-01-14
- Last updated
- 2020-01-14
- Certified
- 2020-01-14
Frequently asked questions
- What is Mallory Markwitz's NPI number?
- Mallory Markwitz's National Provider Identifier (NPI) is 1902446305, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Markwitz's specialty?
- Mallory Markwitz is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mallory Markwitz located?
- Mallory Markwitz's practice location on file with NPPES is 1340 Blairs Ferry Rd, Hiawatha, IA 52233-1900.
- What is Mallory Markwitz's phone number?
- The practice phone number listed in the NPPES registry for Mallory Markwitz is (319) 398-6575.
- Does Mallory Markwitz accept Medicare?
- Mallory Markwitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallory Markwitz's NPI active?
- Yes — Mallory Markwitz's NPI (1902446305) is active in the NPPES registry as of the last update on 2020-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.