Liisa Field, PA-C
NPI 1215921911 · Physician Assistant · Warrenton, VA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Liisa Field, PA-C is a Physician Assistant provider in Warrenton, VA (NPI 1215921911).
Provider details
- NPI number
- 1215921911
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 0110006233 (VA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
1,317 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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 226 | $104 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 224 | $88 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 141 | $61 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 139 | $105 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 99 | $125 |
| Insertion of Needle Into Vein for Collection of Blood Sample |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 75 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 234 | 41 |
| Atorvastatin Calcium | 190 | 71 |
| Furosemide | 122 | 40 |
| Escitalopram Oxalate | 109 | 29 |
| Sertraline Hcl | 108 | 21 |
| Levothyroxine Sodium | 108 | 41 |
| Amlodipine Besylate | 99 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-08
- Last updated
- 2026-04-08
- Certified
- 2026-04-08
Frequently asked questions
- What is Liisa Field's NPI number?
- Liisa Field's National Provider Identifier (NPI) is 1215921911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Liisa Field's specialty?
- Liisa Field is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Liisa Field located?
- Liisa Field's practice location on file with NPPES is 493 Blackwell Rd Ste 202, Warrenton, VA 20186-2689.
- What is Liisa Field's phone number?
- The practice phone number listed in the NPPES registry for Liisa Field is (540) 347-4400.
- Does Liisa Field accept Medicare?
- Liisa Field is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Liisa Field's NPI active?
- Yes — Liisa Field's NPI (1215921911) is active in the NPPES registry as of the last update on 2026-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.