Diane Sacks, MA. LMFT
NPI 1770642852 · Marriage & Family Therapist · Seattle, WA
Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diane Sacks, MA. LMFT is a Marriage & Family Therapist provider in Seattle, WA (NPI 1770642852).
Provider details
- NPI number
- 1770642852
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MA. LMFT
- Sex
- Female
- Sole proprietor
- Yes
- License
- LF00001064 (WA)
Specialties & taxonomies
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
19 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
140 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 | 140 | $121 |
Typical Medicare-allowed amounts for these services range $121–$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
- 2006-12-06
- Last updated
- 2023-11-27
- Certified
- 2023-11-27
Frequently asked questions
- What is Diane Sacks's NPI number?
- Diane Sacks's National Provider Identifier (NPI) is 1770642852, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Sacks's specialty?
- Diane Sacks is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Diane Sacks located?
- Diane Sacks's practice location on file with NPPES is 2136 47th Ave Sw, Seattle, WA 98116-2108.
- What is Diane Sacks's phone number?
- The practice phone number listed in the NPPES registry for Diane Sacks is (206) 932-4424.
- Does Diane Sacks accept Medicare?
- Diane Sacks is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diane Sacks's NPI active?
- Yes — Diane Sacks's NPI (1770642852) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.