Ryan Sondergard, D.O.
Ryan Sondergard, D.O. is a Psychiatry Physician in Maryland Heights, MO, registered under NPI 1003299413.
Getting there
Here is what surrounds this office in Maryland Heights, based on OpenStreetMap data collected Sep 17, 2026. Parking is available about 0.34 mi away. The nearest transit stop is 0.31 mi away, served by Dorsett at Weldon Parkway. A pharmacy sits 0.41 mi from the entrance (Walgreens), 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
Hotel Hampton Inn St. Louis/Westport 178 ft ~1 min
Hotel Homewood Suites by Hilton St Louis Westport 466 ft ~2 min
Restaurant Waffle House 716 ft ~3 min
Restaurant Wok Express 890 ft ~4 min
Tu-Su 11:00-22:00
Restaurant Soulard Gyro 922 ft ~4 min
Mo-Sa 11:00-20:00
Hotel Surestay Plus Hotel by Best Western St. Louis Westport 0.23 mi ~5 min
12220 Dorsett Road, Maryland Heights 63043
Transit Progress Parkway at Dorsett 0.24 mi ~5 min
Parking 0.25 mi ~5 min
Gas station QuikTrip 0.26 mi ~6 min
Parking 0.27 mi ~6 min
Transit Dorsett at Mckelvey Hill 0.30 mi ~6 min
Transit Dorsett at Weldon Parkway 0.31 mi ~7 min
Coffee Higher Groundz Coffee + Tea 0.32 mi ~7 min
Parking 0.34 mi ~7 min
Gas station Phillips 66 0.36 mi ~8 min
Pharmacy Walgreens 0.41 mi ~9 min
Grocery El Jarocho Mexican Grocer & Taqueria 0.44 mi ~9 min
Gas station Mobil 0.46 mi ~10 min
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 |
|---|---|---|
| 2016044657 | MO | Psychiatry Physician primary |
This provider holds licence 2016044657 issued in MO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Psychiatry
- PAC ID
- 8527360908
- Enrollment ID
- I20190812002705
Medicare enrolment is recorded as approved under the provider type Practitioner - Psychiatry. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Psychiatry covers
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems. NUCC Health Care Provider Taxonomy, code 2084P0800X
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 | 1003299413 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 2, 2015 |
| Last updated | May 28, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | D.O. |
| Practice address |
2458 OLD DORSETT RD STE 110 Maryland Heights, MO 63043 (636) 939-2550 |
| Mailing address |
4800 N SCOTTSDALE RD STE 2500 Scottsdale, AZ 85251 |
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 | 9 | 9 | 4 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 9 | 9 | 4 | 2 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.