Provider Profile
Mary Angelyn J. Clark, MSN, APRN
Unclaimed ProfileAbout Mary Angelyn Clark
Mary Angelyn J. Clark, MSN, APRN is a nurse practitioner practicing in Walnut Creek, CA. Mary Angelyn is also listed as specializing in nurse practitioner — adult health, registered nurse, and nurse practitioner — family. Medicare claims data shows Mary Angelyn provided 308 services to 250 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. This provider record is associated with NPI 1053887455.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (925) 692-5610
- Email not available
Practice Locations
177 LA CASA VIA STE 390
Walnut Creek, CA 94598
Procedures Most Often Billed to Medicare
308 services · 250 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
190 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
118 | More often than most peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 7
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 23 related providers in 3 groups
Other nurse practitioners in Walnut Creek 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2018 at Other 7
Providers who graduated from the same medical school in the same year.
Common questions
What does Mary Angelyn J. Clark, MSN specialize in?
Mary Angelyn J. Clark, MSN is a nurse practitioner in Walnut Creek, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Mary Angelyn J. Clark, MSN located?
Mary Angelyn J. Clark, MSN is listed at 177 la Casa Via Ste 390, Walnut Creek, CA 94598. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mary Angelyn J. Clark, MSN's phone number?
The number on file is (925) 692-5610. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Mary Angelyn J. Clark, MSN?
Mary Angelyn J. Clark, MSN's National Provider Identifier is 1053887455. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Mary Angelyn J. Clark, MSN train?
Mary Angelyn J. Clark, MSN attended Other, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mary Angelyn J. Clark, MSN have?
Mary Angelyn J. Clark, MSN has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What does Mary Angelyn J. Clark, MSN do most often?
According to Medicare billing data, Mary Angelyn J. Clark, MSN the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Mary Angelyn J. Clark, MSN's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mary Angelyn J. Clark, MSN. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.