Kathryn Petrarca
Kathryn Petrarca is a provider specialising in Clinical Social Worker in Baltimore, MD, registered under NPI 1003381716.
Getting there
Here is what surrounds this office in Baltimore, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 0.43 mi away. The nearest transit stop is 553 ft away, served by Greenmount Avenue & 29th Street Southbound. A pharmacy sits 0.36 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.32 mi away.
Getting here and what is nearby
Parking 78 ft ~1 min
Transit Greenmount Avenue & 30th Street Southbound 218 ft ~1 min
Transit Greenmount Avenue & 30th Street Opposite Northbound 264 ft ~1 min
Restaurant Khepera’s Kitchen 458 ft ~2 min
418 East 31st Street
Restaurant Yau Brothers Chinese Food 475 ft ~2 min
Transit Greenmount Avenue & 29th Street Southbound 553 ft ~3 min
Restaurant Thai Restaurant 516 ft ~2 min
3100 Greenmount Avenue, Baltimore 21218
Convenience D&D Convenience, LLC 728 ft ~3 min
3124 Greenmount Avenue, Baltimore 21218
Coffee Red Emma's Cafe 778 ft ~3 min
3128 Greenmount Avenue, Baltimore 21218
Tu-Sa 09:00-21:00; Su 10:00-16:00
Pharmacy Waverly Professional Pharmacy 0.20 mi ~5 min
Convenience 7-Eleven 0.21 mi ~5 min
Grocery Punjab Groceries & Halal Meat 0.22 mi ~5 min
Gas station Crown 0.23 mi ~5 min
Grocery Giant 0.25 mi ~5 min
601 East 33rd Street, Baltimore 21218
Mo-Su 06:00-22:00
Gas station US Fuel 0.26 mi ~6 min
500 East 33rd Street, Baltimore 21218
Convenience Barclay Market 0.27 mi ~6 min
Gas station US Fuel 0.27 mi ~6 min
500 East 33rd Street, Baltimore 21218
Grocery Streets Market 0.30 mi ~7 min
3117 Saint Paul Street, Baltimore 21218
Mo-Su 08:00-22:00
Coffee Kung Fu Tea 0.31 mi ~7 min
3113 Saint Paul Street, Baltimore 21218-3800
Mo-Su 11:00-22:00
Coffee Juice Works 0.32 mi ~7 min
2602 Greenmount Avenue
Pharmacy CVS Pharmacy 0.36 mi ~8 min
Parking 0.38 mi ~8 min
3310 North Calvert Street, Baltimore 21218
Parking 0.43 mi ~9 min
110 East 34th Street, Baltimore 21218
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 16556 | MD | Clinical Social Worker primary |
This provider holds licence 16556 issued in MD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003381716 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 9, 2018 |
| Last updated | Oct 9, 2018 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
416 E 30TH ST Baltimore, MD 21218 (410) 889-0727 Fax (410) 889-0729 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 3 | 8 | 1 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 8 | 2 | 7 | 2 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.