Constance Shreckengost, MD, PHD
Constance Shreckengost, MD, PHD is a Surgery Physician in Sacramento, CA, registered under NPI 1003310996.
Getting there
Here is what surrounds this office in Sacramento, based on OpenStreetMap data collected Sep 18, 2026. Parking is available about 0.51 mi away at Parking Structure 4. The nearest transit stop is 512 ft away, served by Stockton + Colonial. If you arrive early, there is a coffee shop 0.25 mi away.
Getting here and what is nearby
Transit Stockton + Colonial 259 ft ~1 min
Parking Lot 1 257 ft ~1 min
Transit Stockton + Miller 378 ft ~2 min
Transit Stockton + Colonial 512 ft ~2 min
Hotel Hotel Med Park, Ascend Hotel Collection 0.20 mi ~5 min
Parking Parking Structure 3 0.20 mi ~4 min
4251 X Street, Sacramento 95817
Coffee Starbucks 0.25 mi ~6 min
Restaurant Subway 0.33 mi ~7 min
1978 Stockton Boulevard, Sacramento 95816
Mo-Th 07:00-21:00; Fr 08:00-21:00; Sa-Su 09:00-20:00
Hotel Courtyard Sacramento Midtown 0.38 mi ~8 min
Hotel De Ville Motel 0.47 mi ~10 min
2756 Stockton Boulevard, Sacramento 95817
Parking Parking Structure 4 0.51 mi ~11 min
2249 48th St, Sacramento 95817
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 |
|---|---|---|
| A201258 | CA | Surgery Physician primary |
This provider holds licence A201258 issued in CA. 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 Surgery covers
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery. NUCC Health Care Provider Taxonomy, code 208600000X
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 | 1003310996 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 23, 2018 |
| Last updated | Jun 30, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD, PHD |
| Practice address |
2221 STOCKTON BLVD STE E Sacramento, CA 95817 (916) 734-2680 |
| Other names |
Constance Harrell Former Legal Business Name |
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 | 1 | 0 | 9 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 1 | 0 | 9 | 9 |
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.