Provider Profile
Haley L. Zimmerman, FNP-C
Unclaimed ProfileAbout Haley Zimmerman
Haley L. Zimmerman, FNP-C is a registered nurse practicing in Pasadena, MD. Haley trained at George Washington University School of Medicine, graduating in 2023. Medicare claims data shows Haley provided 330 services to 223 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, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, and hemoglobin a1c level.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (443) 270-8600
- Email not available
Practice Locations
8109 RITCHIE HWY STE 100
Pasadena, MD 21122
123 Sandy Beach Dr
Pasadena, MD 21122
Procedures Most Often Billed to Medicare
330 services · 223 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
14 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
207 | More often than most peers in Registered nurse (RN) |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
47 | As often as other peers in Registered nurse (RN) |
| Hemoglobin a1c level | Lab test | 83036 |
27 | Too few peers to compare |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
23 | Less often than most peers in Registered nurse (RN) |
| Administration of a standardized, evidence-based social determinants of health risk assessment tool, 5-15 minutes | Billing code | G0136 |
12 | Too few peers to compare |
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.
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.
Other registered nurses in Pasadena 8
Same specialty, same city.
Trained at George Washington University School of Medicine 1
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2023 at George Washington University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 8
Providers in MD who bill this service to Medicare most often.
Common questions
What is Haley L. Zimmerman's specialty?
Haley L. Zimmerman is a registered nurse in Pasadena, MD. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Haley L. Zimmerman?
Haley L. Zimmerman is listed at 8109 Ritchie Hwy Ste 100, Pasadena, MD 21122. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Haley L. Zimmerman?
The number on file is (443) 270-8600. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Haley L. Zimmerman?
Haley L. Zimmerman's National Provider Identifier is 1770276057. 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
What is Haley L. Zimmerman's education?
Haley L. Zimmerman attended George Washington University School of Medicine, graduating in 2023. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Haley L. Zimmerman have?
Haley L. Zimmerman has 3 years experience. Calculated from a graduation year of 2023, reported in the CMS National Downloadable File.
CMS public data
What is Haley L. Zimmerman known for?
According to Medicare billing data, Haley L. Zimmerman provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Haley L. Zimmerman's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Haley L. Zimmerman. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.