Diana Gruhl, LCSW-C
NPI 1851024947 · Clinical Social Worker · Ellicott City, MD
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Gruhl, LCSW-C is a Clinical Social Worker provider in Ellicott City, MD (NPI 1851024947).
Provider details
- NPI number
- 1851024947
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW-C
- Sex
- Female
- Sole proprietor
- No
- License
- LCSW92169 (CA)
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
3 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
258 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, 1 Hour90837 | 258 | $116 |
Typical Medicare-allowed amounts for these services range $116–$116 (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
Additional practice locations (1)
- 5850 Waterloo Rd Ste 230Columbia, MD 21045-1943Phone: (410) 757-2077
Registry dates
- Enumerated
- 2022-07-06
- Last updated
- 2023-10-11
- Certified
- 2023-10-11
Frequently asked questions
- What is Diana Gruhl's NPI number?
- Diana Gruhl's National Provider Identifier (NPI) is 1851024947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Gruhl's specialty?
- Diana Gruhl is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Diana Gruhl located?
- Diana Gruhl's practice location on file with NPPES is 11090 Resort Rd, Ellicott City, MD 21042-2074.
- What is Diana Gruhl's phone number?
- The practice phone number listed in the NPPES registry for Diana Gruhl is (707) 481-5959.
- Does Diana Gruhl accept Medicare?
- Diana Gruhl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Gruhl's NPI active?
- Yes — Diana Gruhl's NPI (1851024947) is active in the NPPES registry as of the last update on 2023-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.