Holley May
Holley May is a Genetic Counselor (M.S.) in Evanston, IL, registered under NPI 1003239971.
Getting there
Here is what surrounds this office in Evanston, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 0.48 mi away at Dartmouth Lot. The nearest transit stop is 337 ft away, served by Central & Ridge. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Transit Central & Girard (Purple Line) 230 ft ~1 min
Parking 279 ft ~2 min
Transit Central & Girard (Purple Line) 315 ft ~2 min
Transit Central & Ridge 337 ft ~2 min
Parking NorthShore Evanston Parking Garage 345 ft ~2 min
1015 Central Street, Evanston 60201
Grocery D&D Finer Foods 0.37 mi ~8 min
825 Noyes Street, Evanston 60201
Mo-Sa 08:00-20:00; Su 09:00-17:00
Restaurant Soban Korea 0.38 mi ~8 min
819 Noyes Street, Evanston 60201
Coffee Coffee Lab 0.39 mi ~8 min
Restaurant Dave's New Kitchen 0.39 mi ~8 min
815 Noyes Street, Evanston 60201
Restaurant Tomate Fresh Kitchen 0.39 mi ~8 min
914 1/2 Noyes Street, Evanston 60201
Parking Dartmouth Lot 0.48 mi ~10 min
600 Dartmouth Place, Evanston 60201
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 |
|---|---|---|
| 246.000170 | IL | Genetic Counselor (M.S.) primary |
This provider holds licence 246.000170 issued in IL. 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 Genetic Counselor, MS covers
A masters trained health care provider who collects and interprets genetic family histories; assesses the risk of disease occurrence or recurrence; identifies interventions to manage or ameliorate disease risk; educates about inheritance, testing, management, prevention, ethical issues, resources, and research; and counsels to promote informed choices and adaptation. Certification was established in 1993 by the American Board of Genetic Counseling and prior to that by the American Board of Medical Genetics. Requirements for experience, licensure, and job responsibilities vary among the states. NUCC Health Care Provider Taxonomy, code 170300000X
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 | 1003239971 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 29, 2014 |
| Last updated | Jan 29, 2014 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1000 CENTRAL ST STE 620 Evanston, IL 60201 (847) 570-1379 Fax (847) 722-5318 |
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 | 2 | 3 | 9 | 9 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 3 | 9 | 9 | 5 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.